Where pointing the camera really finds the star, and where it is a pretty planetarium with no accuracy and a subscription. レビュー本文のスコアが高いのはOur Galaxy（78/100）、Stellarium Mobile（74）、iCSC（74）です。
People love it for an unusual thing: instead of the dome overhead it shows the three-dimensional structure of the galaxy and how far away objects really are from us. Observers and astrophotographers say it changes your sense of scale and is great for star parties and teaching. The downsides are minor: navigation is clunky in places, and there's no sky-tie by coordinates, so you end up jumping between apps.
評価点
Three-dimensional galaxy structure and real distances to objects, a fresh sense of the universe's scale, great for star parties and teaching, a companion to planetariums like SkySafari, detailed rendering
不満点
Navigation clunky in places, no sky-tie by coordinates for finding objects while observing, forces jumping between apps, you can fly so far out it shows NaN
向いている人：Hobbyists and teachers who want to grasp where we are in the galaxy and how far objects really are, not find them in the sky
Stellarium Mobile is praised as a handy, intuitive tool for finding things in the sky: people locate constellations, Jupiter, M45, and view future positions of objects, and many bought premium at a reasonable price. Its weak spot is orientation and small limits: the app struggles to tell which way you're looking, sometimes flipping 180 degrees, and basic time-forward plus some sky-history depth are locked behind the paid version.
評価点
Finding constellations, Jupiter and M45, showing future positions of planets and stars, clear and intuitive, reasonable premium price
不満点
Can't set which direction you're facing, 180-degree flips with no calibration, time-forward locked in the paid version, sky history capped at 7000 years versus the desktop app, glitchy in places
向いている人：Enthusiasts at any level who want to find objects visually and plan observations
Astrophotographers have trusted it for years as the most accurate cloud forecast for observing, some for over 20 years. They value the quick jump to the local chart and its reliability. It breaks on tiny non-zoomable text on iPad, no search across the site list, no way to launch straight into a favorite location, and colors that make no sense to beginners without a legend.
評価点
Most accurate cloud forecast for observing, quick access to the local chart, reliability and daily updates, proven over years
不満点
Tiny non-zoomable text on iPad, no search over the site list, cannot launch straight into a favorite location, no legend so colors confuse beginners
向いている人：Astrophotographers and observers who need an accurate clear-sky forecast before heading out
Sky Guide is praised for its beautiful presentation, its science-articles section, and the pleasant ambient music while you use it, and many have relied on it for years. But accuracy lets it down: people with a calibrated compass see a 30-degree azimuth shift, and after updates some familiar features and flyby alerts moved behind a monthly fee, which stung those who once bought the app outright.
評価点：Beautiful sky presentation, science-articles section, soft ambient music, star, planet and satellite search with details
不満点：Compass off by tens of degrees in azimuth, some features and flyby alerts moved behind subscription, no grandfathering for old buyers, Milky Way arm gone from compass mode, missing many constellations
向いている人：People who watch the sky regularly and read about space, and who care about polished presentation
Astrophotographers love it for accurate cloud and seeing forecasts: it saves wasted evenings and helps decide whether to shoot in Ha or Oiii by conditions. It stumbles on local accuracy and stability: temperature runs 8-12 degrees off for some, cloud forecasts occasionally miss, and the free version is less accurate and nudges toward a subscription. Plus the network sometimes breaks and the main page reloads endlessly.
評価点：Accurate cloud and seeing forecasts, planning imaging sessions without wasted setups, everything needed in one place, choosing filter by seeing, handier than the old cleardarksky
不満点：Temperature off by 8-12 degrees in some regions, cloud forecast occasionally inaccurate, free version noticeably less accurate, network errors and endless main-page reloading, dark hard-to-read interface, no widgets
向いている人：Astrophotographers and observers who plan trips by weather and cloud cover and will pay for accuracy
Experienced hobbyists and astrophotographers keep it as their main planetarium program for planning and observing, valuing the depth and quality of information and the point-device-at-sky tracking. It breaks because the shift to a subscription pulled features long-time buyers already paid for, updates wiped telescope settings and connection points, and one update broke the point-at-sky tracking.
評価点：Main planetarium program for planning astrophotography, depth and quality of information, point-device-at-sky tracking, regular updates
不満点：The shift to subscription pulled already-paid features, updates wiped telescope settings and connection points, broke the point-at-sky tracking, confusing interface and lacking instructions
向いている人：Experienced amateur astronomers and astrophotographers who plan observations and shoot with a telescope
People keep it for years as a pocket planetarium: point the camera at the sky and it names planets, stars and constellations, beautifully and clearly. It breaks on accuracy after updates: some lost sunrise times, moon phase showed a day early, the 3D view went black for some devices, and the compass and north-finding drift. It also annoys that you can't change the time zone.
評価点：Pointing camera at the sky, beautiful visuals, shows planets stars constellations, visibility times, works even on cloudy nights
不満点：Errors in moon phase and sunrise, sunset times gone after an update, black 3D view on some devices, compass and north-finding drift, can't change time zone, glitchy on iPad mini
向いている人：Beginners and families who want to point a phone at the sky and learn what that bright dot overhead is
People have kept this as their favorite planetarium for years for its depth: you can fly out to nearby stars and galaxies and watch the sky in real time from your phone. But the new version hurt many users, reinstalling loses telescope control and shrinks the time range to the year 1600, the comet database moved behind a subscription, and the compass can be off by about 20 degrees. There is also billing confusion, the free trial charges you right away.
評価点：Travel to nearby stars and galaxies, real-time sky tracking, clean interface, beginner friendly, beautiful visuals, heritage of the desktop Redshift
不満点：Reinstalling loses telescope control and caps dates at the year 1600, comet and conjunction data moved into a subscription, compass off by about 20 degrees, confusing free trial that charges immediately, after an update the sunrise and moon phase data are wrong
向いている人：Astronomy lovers who want a deep planetarium with galaxy flythroughs and a live sky, and educators
It is more of an educational space-exploration game, loved for real planets, moons, black holes, and learning by flying through the system. Kids and adults get absorbed in exploring. It breaks because planet surfaces are monotonous and empty (the same plastic-looking ground everywhere), you cannot land despite the promise to walk on planets, and an update killed the sound for some.
評価点：Real planets, moons, and black holes to explore, learning astronomy by flying through the system, crisp graphics and scientific info
不満点：Monotonous empty planet surfaces, cannot land despite the promise to walk on planets, sound lost after an update for some, limited object selection
向いている人：Kids and space fans who want to fly through a real Solar System and learn by exploring
An elegant, pleasant sky map many keep for years and love for its clean simple look and precise object targeting. The real recent trouble is that the compass is off for some people, pointing the wrong way and not fixed by figure-eight calibration, while the developer thinks the app doesn't need updating. In the southern hemisphere the constellations barely work.
評価点：Clean simple beautiful look, precise object targeting with no running around, sky-shoot planning, sun tracking for gardening, finds planets, stars and even comets like NEOWISE
不満点：Misaligned compass pointing the wrong way and not fixed by calibration, developer won't update the app, poor in the southern hemisphere, motion broke on newer devices, pushy review nags right after install
向いている人：Hobbyists who value a clean handy view and planning, if their phone compass is fine
For serious observers with a telescope this is still the best tool for aiming and object reference, many buy every version for years. But recent updates added game-like and social features with sound effects that get in the way of veterans, and Live Sky is called useless. On top of that there are regular crashes when connecting to StarSense and when adding to an observing list.
評価点：Precise telescope aiming and detailed object info, the best cosmos reference, easy connection to scopes like the Meade LX600, event notifications
不満点：Crashes when connecting to StarSense and when adding an object to a list, the interface got cluttered with new games and sounds that a solo observer does not want, the database sometimes cannot find an object
向いている人：An experienced amateur astronomer with a telescope who aims by the app and keeps observing lists
People value pointing the phone at the sky to match the picture with real stars, seeing the Moon below the horizon, and scrubbing dates to watch planets move. They also praise it for teaching kids and observing from light-polluted cities. It breaks on crashes after updates, a lost point-to-sky mode, and confusion over what is free versus paid.
評価点：Pointing phone at sky to match stars, showing the Moon below the horizon, date scrubbing and planet motion, teaching kids, working in city light pollution
不満点：Crashes after updates, lost point-to-sky mode, screen shaking, unclear what is free versus paid
向いている人：Beginners and families with kids who want to point the phone at the sky and learn constellations even from a city
The app runs the Seestar smart telescope and gets praised for making quality shots easy for any beginner, an intuitive interface, and an alpaca driver for advanced users to connect other software. What breaks it is the forced firmware update in the middle of an observing session in the cold, it eats time and battery and cannot be postponed. There are also in-app ads to buy a Seestar shown to Seestar owners, and the version 3 update that broke tracking, frame stacking and WiFi.
評価点：Quality shots right out of the box for a beginner, very simple and intuitive interface, running several S50 and S30 telescopes at once, alpaca driver for advanced users, easy to learn
不満点：Forced firmware update in the middle of observing that eats time and battery and cannot be postponed, in-app ads to buy a Seestar shown to Seestar owners, version 3 broke tracking, frame stacking and WiFi, no way to enter RA and Dec coordinates to go to an object, no landscape orientation on iPad
向いている人：Seestar smart telescope owners, astrophotography beginners, and anyone who wants simple sky imaging without manual setup
Sky Tonight is valued as a teaching app: lots of info, meteor-shower dates, explanations of phenomena, and people say they learned a lot. But lately it lets them down on reliability and accuracy: for some it freezes within half a minute, shows planets in the wrong constellations, and inflates the visibility index to 95% when the weather is clearly otherwise, plus ads get in the way of even finding your feet.
評価点：Educational content and explanations of phenomena, meteor-shower dates, lots of info on planets and the Moon, useful for astronomy beginners
不満点：Freezes and becomes unusable within 30 seconds, planets in wrong constellations, inflated visibility index in bad weather, heavy ads while trying to learn it, confusing navigation, murky 'free' trial
向いている人：Beginning astronomy enthusiasts who want to learn and catch meteor showers
People genuinely love this app, it is cheap, gives long write-ups about each constellation with links to read more, and kids and grandkids happily learn the sky with it. But many hit the same flaw, the compass is off and the map shows the wrong direction, forcing you to drag the screen by hand. Some also see moon phases and positions lag behind because it has not been updated in a while.
評価点：Inexpensive, detailed write-ups and links for every constellation, kids and grandkids happily learn the sky, accurate object identification once set up
不満点：Compass is off, the map shows the wrong direction and you must drag the screen by hand, moon phases and positions lag from infrequent updates, behaves oddly when switching the AR camera
向いている人：A family or beginner who wants to cheaply read about constellations and learn the sky with kids
People value the rich object reference and the friendly first-run intro to the sky, but recent updates pushed search behind a subscription and bolted on an AI assistant called Aura that pops up on every tap and irritates even longtime fans. They also complain about accuracy: the camera shows the Moon in the wrong place, and the screen is too bright to let your eyes adjust to the dark sky.
評価点：Detailed object cards and events of the year, clear first-run intro, plenty of stars and info even for free
不満点：Search moved behind a subscription, pushy Aura AI helper pops up on every tap, objects shown in wrong positions, screen too bright for real sky-watching, no light mode for reading articles
向いている人：People who want to understand the sky and read about space events and don't mind paying a subscription
A deep tool for people serious about astronomy: scrubbing time into the past and future, transits, use at an observatory. But newcomers find it complex and cluttered, the interface is dated and cramped, and updates have repeatedly broken it so people rebought it. Many features are locked behind Plus and Pro upgrades.
評価点：Time travel far into the past and future, transit calculations, use by professionals at an observatory, real-time GPS operation, low entry price
不満点：Steep learning curve for beginners, dated cramped interface, breakage after iOS updates forcing rebuys, date resets to current, AR fails when time is set manually, lots gated behind paid upgrades
向いている人：Serious hobbyists and professionals willing to learn it, not people who just want to point their phone at the sky
This is a deep manual camera-control tool for shooting stars, the ISS, star trails and timelapses, and people who master the tutorials genuinely like it, with no equivalent on other platforms. But it has gone long without updates and lags and freezes badly on newer iPhone 16 and 17 Pro, and the Moon comes out grainy and blurry even following its own guide. Some got better aurora shots on the plain camera app.
評価点：Deep manual camera control like real photography, ISS, star-trail and timelapse modes, a cheap way into astrophotography without expensive gear, no equivalent on other platforms
不満点：Lags and freezes badly on iPhone 16 and 17 Pro, long without updates, the Moon comes out grainy and blurry even by the tutorial, no Bluetooth shutter, steep learning curve
向いている人：A beginning astrophotographer willing to work through the tutorials for night shots without expensive gear
People love pointing the phone to learn which star or planet it is and impressing friends, and they value the data depth and reliable use while traveling. It breaks on compass directions flipping 180 degrees after an update, inaccurate calibration where the in-app object sits off from what the eye sees, and the app stuffing the calendar with events unasked.
評価点：Identifying a star or planet by pointing the phone, data depth, reliable use across the planet, time slider
不満点：Cardinal directions flip 180 degrees after an update, inaccurate calibration offset from the real sky, stuffs the calendar with events unasked, confusing interface
向いている人：People who want to point the phone at the sky, identify objects, and share it with friends
Almost everyone loves it for beauty: stunning graphics, deep work on the solar system, planetary motion and the ecliptic, great for understanding time and eclipses. But many stumble on usefulness: the app can't find your location even with permission, and without that it's nearly useless, part of it is tied to a city database with the nearest city a hundred miles away. Some pay and can't see how to do anything with it on the ground.
評価点：Stunning graphics and attention to detail, understanding planetary and ecliptic motion and eclipses, good for studying the zodiac in motion, beautiful interface
不満点：Can't find location even with permission, tied to a city database instead of GPS, too much info you can't turn off, unclear how to apply it on the ground, can't move Earth off-center when zooming
向いている人：Those who want to beautifully explore how the solar system is built and understand time and eclipses, not find objects in the real sky
A clean, clear camera-based sky map many keep for years and love because you can point the phone and ID a bright star or planet like Jupiter and Venus. But since late 2025 the orientation is off for some people, stars show in the wrong place, and calibration doesn't help. It lacks recent objects like the James Webb telescope and new comets, and its deep-sky catalog is thinner than rivals.
評価点：Clean ad-free view, aim the camera and ID a bright star or planet, years of use, detailed object descriptions, planet alignments and constellations over the real sky
不満点：Orientation glitch after the late-2025 update showing stars in the wrong place and stuck on north, figure-eight calibration doesn't help, no James Webb or new comets, thin deep-sky catalog for photography, satellites and ISS sometimes don't appear
向いている人：Hobbyists who want a clean camera map to ID stars and planets, if their phone orientation works
Star Walk 2 Pro is loved by experienced observers: they use it every time they set up a telescope to plan the evening, and value the sound design and the wealth of object info. But an update angered longtime fans: you used to just pinch the map and see galaxies and nebulae with labels, now identifying an object is hard, the live satellites are gone, and aiming at the Moon and planets can be noticeably off.
評価点：Planning a telescope evening, wealth of object info, atmospheric sound design, kids getting into astronomy through the app
不満点：The new version made simple object identification harder, lost live satellites and the old pinch-to-label zoom, ads in a paid app, Moon and planet aiming is off, gyroscope broken on some iPhones
向いている人：Experienced observers with a telescope and families who want to get kids into astronomy
A visual 3D sky map where you can touch an object on screen and get info on it, and when tracking works the targeting is precise and pleasant with kids and grandkids. But for a noticeable share of people the tracking is way off from the compass, the app crashes on launch or no longer recognizes the Moon. Many are annoyed by the constellation drawings that can't be removed and the lack of instructions.
評価点：Select an object by touching the screen with precise info, visual 3D view, precise targeting when it works, fun with kids and grandkids, shows nearly the whole sky
不満点：Tracking way off from the compass and stuck on north, crashes on launch, stopped recognizing the Moon, can't remove constellation drawings, no instructions or guide, dead developer website links, contacts servers despite the stated privacy policy
向いている人：Hobbyists who like 3D and touch-to-select objects, if their phone tracking is fine
A simple, clean sky map without information overload, loved by beginners and telescope owners alike, some plan imaging sessions with it and find Messier and NGC objects. The one recurring problem is that the direction is off by 15 to 45 degrees with no way to calibrate to the real sky. It also lacks satellites and comets.
評価点：Simple and clean, shows constellations, planets, Messier and NGC objects without clutter, helps plan imaging and star-hopping with a telescope, free star and constellation names
不満点：Direction off by 15 to 45 degrees with no way to calibrate to the sky, no satellites or comets, sometimes freezes and does not refresh star positions
向いている人：A beginner or hobbyist with a telescope who wants a light map of constellations and objects for planning, not precise aiming
Serious hobbyists love it for the clean interface, the Tonight tab for planning the evening, the events section, and the telescope link-up for aiming. Long-time users happily pay to upgrade. It breaks because the Tonight button crashes after a recent update, fresh comets are missing from the database, and old paid versions are abandoned amid repeated demands to buy again.
評価点：Clean intuitive interface, Tonight tab and events section for planning sessions, telescope connection, logging observing sessions
不満点：Tonight button crashes after update, fresh comets missing from the database, old paid versions abandoned, nagging demands to repurchase
向いている人：Experienced amateur astronomers with a telescope who plan night sessions and keep an object list
As a one-stop source of space news people genuinely love it: fresh, current, always something to read and learn. Ads kill it: full-screen popups on launch, videos auto-starting, switch to another app and come back and there's an ad again, and some who paid to remove ads still see them. People also complain the news leans mostly on SpaceX and skips other firms.
評価点：Fresh current space news in one place, updated often, read-markers on stories, you learn new things
不満点：Aggressive ads and launch popups, auto-playing videos, ads remain even after paying to remove them, app locks up, articles open in a browser with even more ads, SpaceX bias
向いている人：Space fans who want to stay on top of the news and can stomach the ads or pay
As a pocket constellation guide people keep it for years and love opening it to learn what they're looking at: point it and realize that's Jupiter overhead, with a nice flexibility of layers. But for some the stars simply don't line up with the real sky even after calibration, the augmented reality lags, and rivals like Star Chart are more accurate. Little things annoy too: fonts don't grow when zooming, and gyroscope mode resets.
評価点：Pocket constellation guide, point and learn what an object is, flexible display layers, works for years and gets updates, handy while traveling
不満点：Stars don't line up with the real sky for some even after calibration, weak augmented reality, less accurate than Star Chart, fonts don't grow when zooming, gyroscope mode resets after zoom
向いている人：Beginners who want a simple guide to name an object and constellations, if their calibration happens to line up
A beautiful, detailed Moon app that does one thing very well: Moon phases, planning, garden planting, Vedic and Western astrology without needing to be an expert. The main pain is that the old one-time purchase was replaced with a subscription, and longtime buyers feel cheated. On top of that, widgets fail to render for weeks for many, and the subscription keeps dropping.
評価点：Beautiful interface, detailed Moon phases and times, planning and garden planting by the Moon, Vedic and Western astrology approachable for beginners, useful every day
不満点：Old one-time purchase replaced with a subscription and longtime buyers are angry, widgets fail to render for weeks, subscription drops and needs restoring, hid simple info like the full-moon date, errors in the personal chart
向いている人：People who live by the Moon phases, plan tasks and their garden, and want both astronomy and astrology in one place
Many have used it for years and love it for simplicity, easily finding Jupiter, Mars and constellations, families watching the sky together. But the free version has a serious recent problem, ads with nude bodies scroll across the screen and literally shine in your eyes while you look at the sky, killing the whole point. It also lacks comet tracking, sending some users to Stellarium, and it has gone long without updates.
評価点：Simple and clear, easily finds Jupiter, Mars and constellations, families watch the sky together, works for years and rarely lets you down
不満点：Ads with nude bodies scroll across the screen and blind you while stargazing, no comet tracking, the zoom jumps on its own without a touch, long without updates
向いている人：Someone who wants a simple live sky map to find planets and constellations and is willing to go paid for a clean screen
For serious hobbyists it's the industry standard: the most comprehensive set of astro-imaging targets including obscure catalogues, up and running in a minute yet deep on settings. The pricing hurts: you pay around $40 for the app and half the good features sit behind another $49-50/year subscription, plus a bug that keeps asking you to buy what you already paid for. People also complain the MacOS version is weak with broken zoom, and the compass glitches.
評価点：Most comprehensive astro-imaging target set and obscure catalogues, up in a minute yet deep on settings, importing your own astrophotos into charts, stability and reliability for long-time users, the industry standard
不満点：App re-asks you to buy an already-paid subscription, pricey purchase plus a yearly subscription on top, weak MacOS version with broken zoom, glitchy compass, some NGC objects not found, southern-hemisphere issues
向いている人：Serious hobbyists and astrophotographers who need the fullest target catalogue and can handle the messy pricing
Solar Walk Lite is treated almost as an exploration game of the solar system, and kids and hobbyists like the realistic graphics, spawning black holes and quasars, and the handsome Jupiter. But the free version is buried in ads: long clips pop up on every tap, sometimes kid-inappropriate, and many can't manage to buy them away. The second letdown is that 'the universe at your fingertips' is really limited to a single solar system.
評価点：Realistic planet graphics, spawning black holes, quasars and pulsars, handsome Jupiter, engaging for kids and hobbyists
不満点：Long ads on every tap, sometimes kid-inappropriate, unclear how to buy the ad-free version, limited to one solar system with no other stars or galaxies, occasionally scary music
向いている人：Kids and hobbyists who want a vivid, fun way to explore the solar system
A simple sky map praised because you just point your phone and it names the star or planet, handy while camping and during meteor showers. But many are annoyed by the small viewing area, star labels vanish when you zoom, and constellation figures take up half the screen and get in the way when you just want to ID an object. People who remember Google Sky miss it.
評価点：Simple phone pointing at an object with instant ID, handy while camping and during meteor showers like the Perseids, shows star and constellation names along the horizon
不満点：Too small a viewing area, labels vanish or you get a circle of a whole hemisphere when zooming, can't turn off constellation drawings that cover the sky, unintuitive tracking, compass badly off for some people
向いている人：People who want to just point their phone and identify stars and planets without extra complexity
Star Walk 2 Plus is liked for how easy it is to aim at the sky and find stars, satellites and planets with info, and the music adds atmosphere. But people are infuriated by the core contradiction: even in the paid Plus version ads pop up on every zoom and freeze the map, and newcomers struggle to tell what's even on the screen or how to find a specific star.
評価点：Easy to find stars, satellites and planets, plenty of object info, pleasant music, aim-at-the-sky mode
不満点：Ads pop up even in the paid version and freeze the map, unclear what's shown on screen, poor instructions for newcomers, weak accuracy on comets and deep-sky objects, notifications fire even with settings off
向いている人：Casual 'point-and-identify-a-constellation' users who are willing to buy the ad-free tier
A long-loved sky map dating back to 2013, but the app is effectively abandoned. People navigated the night sky with it for years and are still grateful, yet newer devices hit constant crashes, paid comet packs lack the promised objects, and support stays silent. Buying it today is risky, the app lives on old affection.
評価点：Simple sky orientation, nostalgic look, finds planets and constellations away from the city, years of daily use
不満点：Constant crashes on newer iPhones and iPads, no updates for years, comet packs missing the promised comets, broken planet textures, ads right on entry, unresponsive support
向いている人：People already using it who know its quirks, not newcomers buying it today
The app shows observing conditions and sky events for your location, and when you're at home it works great and is clear. But the main flaw is that searching other locations barely works, and that's exactly what you need to plan a trip to dark skies away from the city. On top of that it hasn't been updated in a while and the clear-sky percentage sometimes doesn't match reality.
評価点：Local and accurate observing conditions, interesting upcoming sky events, clear and intuitive view, helps beginners with a telescope
不満点：Searching other locations barely works by address or zip, only major cities, can't save your own spot, no updates in a long time, clear-sky percentage sometimes disagrees with the weather, dull grey widget look
向いている人：People who mostly observe from home and want the conditions and events for their own location
The Moon is praised for showing the Moon's phase right in the center the moment you open it, which suits anglers and hunters who time things by the phase. But the app is going through a wave of technical trouble: for many it opens and closes within 1-3 seconds, it froze one person's iPhone solid, and the tides section greets you with odd text like 'woman cycles synchronized with solar tides, probably'.
評価点：Moon phase shown center-screen on launch, detailed phases for fishing and hunting, companion to morning meditation, quick visual phase check
不満点：App crashes a couple of seconds after launch, froze a phone so it couldn't be powered off, strange text in the tides section, can't scroll back through dates, wrong distance to the Sun, murky pricing (1.99 turns into 19.29)
向いている人：Anglers and hunters who track the Moon's phase, and people who follow the lunar cycle for their daily rhythm
A free star map trusted for years to find planets, the ISS and constellations, but recent iOS updates broke the orientation for many. People point the phone at the Moon and the app shows it on the opposite side, some just get a frozen screen. The base is solid and clear, but accuracy is shaky right now.
評価点：Finds planets, common constellations and stars for free, shows the ISS and Hubble with orbits, gets kids and grandkids into the sky, years of daily use
不満点：Broken orientation after iOS updates, Moon and Sun on the wrong side, frozen screen that won't open on newer iPads, ads in the middle of use, tiny description font, few constellations in the free version
向いている人：Hobbyists who want a simple visual sky map and don't need perfect accuracy right now
It is NASA's daily space picture with an explanation, and regular readers have made it a morning coffee ritual for years, loving the images and write-ups. But the app is seriously broken now: since October 1, 2025 the daily picture stopped updating, many get a blank black screen, videos will not play, and the developer stays silent. Intrusive ads over the photo and watermarks on saved images also grate.
評価点：NASA's daily space picture with an explanation, a morning coffee ritual, quality images and write-ups
不満点：Since October 2025 the daily picture stopped updating, blank black screen, videos will not play, developer unresponsive, intrusive ads over the photo and watermarks on saved images
向いている人：Space lovers who want one beautiful explained astro photo each day, once the breakage is fixed
Satellite Tracker appeals to people who catch ISS passes: getting the station's trajectory and pass alerts is handy and clear. But the app fails the core expectation: people want to point their phone at the sky and identify any satellite overhead, yet without a subscription only the ISS is visible, not Hubble, not Starlink, none of the rest, plus ads on every tap, and sometimes ads shown even to active subscribers.
評価点：ISS tracking and pass alerts, clear trajectory display, pleasant visualization
不満点：Only the ISS visible without a subscription, can't point the phone to identify a satellite overhead, ads on every tap, ads and subscribe prompts even for active subscribers, no Apple Pencil support, can't isolate Starlink
向いている人：People who want to catch ISS passes and get alerts about them
Valued for a fast, visual week-ahead weather forecast for observing: in a couple of seconds you know whether it's worth hauling the telescope out. But the app has gone years without updates and is riddled with errors: 'forecast unavailable' pops on every launch, saved sites get forgotten, and it can't find your location even at home. For a paid five dollars people call it abandoned.
評価点：Fast visual week-ahead forecast for observing, pleasant interface for a quick glance, cloud-cover accuracy when it works, planning trips
不満点：'forecast unavailable' error on every launch, forgets saved sites, fails to find location, no updates in 3-6 years, feels abandoned for a paid app
向いている人：Amateur astronomers who want a quick week-ahead weather glance and can tolerate constant errors
The app shows the night sky and works for a quick moment of curiosity, but people hit two walls. The picture freezes in one spot and everything feels like you are trapped inside a ball, with objects in the wrong places and flipping upside down. Search also fails to find planets or Earth, and features that used to be free now sit behind payment.
評価点：Shows constellations and their names, helps you learn about the galaxy, easy entry for a beginner
不満点：Picture freezes in one location, objects are in the wrong spots and flip around, search cannot find planets, feels too intense for someone just learning to look at the sky
向いている人：A curious beginner who just wants constellations by name and will not go hunting for planets
The idea is simple and loved: raise your phone to the sky and it tells you what that bright object is and when it's above the horizon. The trouble is that for many it lies about positions: Saturn is visible in the sky yet the app says it hasn't risen, the moon is in the west but shown rising in the east, some see a 6-7 hour shift. It gets location right, but the position math doesn't match the real sky.
評価点：Simple point-at-object, tells you what the bright dot is and when it's above the horizon, ad-free for a small fee, helps explain the sky at the telescope
不満点：Lies about planet and moon positions, shows objects below horizon when they're visible, several-hour shift for some, text description instead of a real sky map
向いている人：Those happy just to name a bright object quickly, but only if the position math happens to match their sky
Star Walk has a good base: lots of object info, beautiful star colors, loved and used for years. But right now it's being eaten alive by ads: zoom a star, catch a 15-30 second clip, zoom again, another clip, the map freezes, and even longtime paying users say bought features moved behind a subscription. In practice the app has become almost unusable.
評価点：Lots of object info, realistic star colors, loved for years for how easy it made finding things
不満点：15-30 second ads on every zoom make the app unusable, map freezes after ads, bought features moved behind a subscription, lost response to phone movement, hard to cancel auto-renew
向いている人：Almost no one as it stands, except people who'll buy the ad-free version up front
Some like the deep zoom and pointing the phone to identify a star or planet and see every constellation. But nearly everything costs extra, even Moon facts, and several people say the app never aligns with the stars or works at all. Many complaints about charges while the app fails and about a subscription that is hard to cancel.
評価点：Deeper zoom than rivals, pointing the phone to identify a star or planet, showing all constellations
不満点：Almost everything costs extra including Moon facts, demands money before it opens, fails to align with the stars for many, hard to cancel the subscription
向いている人：People who want to point the phone at the sky for object names and are willing to risk the payment
A satellite tracking app, but people widely confuse it with the Starlink internet service itself and write about bills and dropped connections. On its merits it is a satellite and ISS tracker: users like the ground tracks and the station inclusion, but motion is shown in jumps, there is no overhead sky view, and everything runs into requests to pay more.
評価点：Nice satellite ground tracks, shows the ISS and Starship launches, tidy view
不満点：Satellite motion in jumps with no smooth animation, no sky view from your location, removed the station track and live Earth images, constant nudges to pay more, hard to figure out without instructions
向いている人：People who want to track satellites and ISS passes, not subscribers of the Starlink internet itself
The idea is liked, a simple colorful moon-phase calendar with risings and settings, and it showed some people how much they did not know about the Moon. But the app fails at the basics, for many the calendar is consistently off by exactly one day and goes years unfixed, and location detection dumps you in Moscow with no way to set a place by hand. As a result the dates and rise times come out wrong.
評価点：Simple colorful moon-phase calendar, shows risings, settings and time in view, pleasant design with humor, covers the basics without extras
不満点：Calendar consistently off by one day and unfixed for years, location dumps you in Moscow with no manual setting, rise and set times are wrong, the watch version is out of sync with the phone
向いている人：Someone who wants a simple pretty moon-phase calendar and can overlook the date offset
The app ships with Celestron telescopes, and at its core job it lets people down: aligning the scope through it is very hard, the target in the app doesn't match where the telescope points, an alignment error pops up, the screen flickers. After iOS updates many find it simply crashes on launch or stopped connecting to the scope. People move to Stellarium and SkySafari, which handle it better.
評価点：Ships with the Celestron telescope, northern-sky object library, compass mode for a rough view, simplicity when it works
不満点：Nearly impossible to align the telescope, target doesn't match the scope and alignment errors, screen flicker, crashes on launch after iOS updates, stops connecting to the scope, no red night mode, laggy controls
向いている人：Celestron telescope owners who need scope control, though many end up switching to Stellarium or SkySafari
Kids like the Solar System model and the AR mode, and some enjoy the planet-layers view. But nearly everything sits behind payment, and without paying the app is basically useless. People complain that the promised free trial charges instantly, moon names are misspelled, and planets are turned sideways.
評価点：Solar System model and AR mode for kids, planet-layers view, educational planet info
不満点：Almost everything is paid and useless without paying, the promised free trial charges instantly, misspelled moon names, planets turned sideways
向いている人：At best kids for a quick look at the planets, if you are willing to pay
It is billed as real-time constellation finding, but without a paid subscription almost nothing works, and that is the main gripe. Anyone who reaches the content genuinely enjoys the AR view of constellations and planets, but most hit a 50-dollar-a-year payment screen and cannot even cancel. Search fails to find even Alpha Centauri.
評価点：Striking AR view of constellations and planets around you, helps a beginner grasp what they are watching, pleasant music
不満点：Almost nothing works without a paid subscription, 50 dollars a year for what other apps give free, search cannot find even Alpha Centauri, hard to cancel the subscription
向いている人：Someone willing to pay for a pretty AR sky effect who will not be searching for specific stars
In practice this is two different things in one app, some expect a sky map while others buy a named gift star, and the gift buyers are delighted like with a warm anniversary present. But the sky map is off by direction, showing south instead of west, fails on iPad and crashes when changing a setting. A separate sore point is that a promised three-day free trial charges 1.99 right away.
評価点：A named star as a touching anniversary or memorial gift, pleasant visuals, some people just enjoy it
不満点：Sky map is off by direction, shows south instead of west, crashes when changing a setting, works poorly on iPad, charges money despite the promised free trial
向いている人：Someone giving a named star to a loved one as a gift, not someone hunting for an accurate sky map
This was once a favorite for finding planets, praised for accuracy and simplicity over competitors, and people bought paid features. But right now it simply does not work, crashing instantly on launch after an iOS update and going unfixed for months, with an expired SSL certificate for some. Deleting and reinstalling does not help, and even five-star reviewers describe the same crash.
評価点：Accurate and simple planet finding better than competitors, helped catch planet parades and alignments, a favorite tool for years
不満点：Crashes instantly on launch after an iOS update and unfixed for months, deleting and reinstalling does not help, expired SSL certificate, long without updates
向いている人：Essentially no one right now until the launch crash is fixed, previously suited a hobbyist finding planets
The app poses as astronomy but is really a paid horoscope service with astrologers, and people feel deceived from the start. Promised personal readings and astrologer replies never arrive for weeks or months, and money is charged after the trial is cancelled. Another fakery signal: an astrologer's profile uses a photo of a dead actor. There is no real astronomy here.
評価点：Some find the horoscopes and personality readings accurate
不満点：Passes a horoscope off as astronomy, promised readings and astrologer replies never arrive for weeks, charges after the trial is cancelled, fake astrologer photos, hard to cancel the subscription
向いている人：Essentially no one seeking astronomy, at best fans of paid horoscopes willing to risk their money
