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Intermittent fasting

Fastic reviews

What users love and hate, from real reviews

Fastic is a fasting timer that grew into a full nutrition tracker with an AI food scanner; its real audience is intermittent-fasting beginners who need structure and explanation, and its defining tension is between an educational, motivating core and an aggressive monetization layer that fires before the product has a chance to prove its value.

500reviews analyzed
4.4average rating
13findings
Strengths

What users love

The AI food scanner is the hook that removes the biggest barrier to tracking

Photographing a plate to get calories and macros removes the manual-entry grind that makes people quit trackers. This is the feature that converts skeptics into payers: users say they didn't believe it would work, tried it, and subscribed. The scanner does the very job the app exists for, and becomes the reason people come back.

This is a pretty awesome app! I didnt believe I could simply take a pic of my food and it would really know the macros

Love that I scan my plate and its super accurate

I love how accurate the AI is when taking a photo of what you're eating!

Visualizing fasting stages turns abstract waiting into observable progress

By showing what happens in the body hour by hour — ketosis, autophagy, HGH — the app makes users feel the fasting window is working for them right now. It turns a dull timer into an educational narrative that sustains motivation through the hard hours and sets Fastic apart from a plain stopwatch.

I love seeing the state my body is in as I fast!

Fastic has taught me about ketosis, hgh , and🥰 autophagy!

Has a great presentation and explains what your body is doing during the fast.

Community and shared fasting turn discipline into a social commitment

Small beginner groups starting the same day, fasting alongside a friend inside the app, and moderated chats create the mutual accountability a solo timer can't. For the core audience — beginners who struggle to hold a routine alone — this turns an abstract goal into a commitment to real people and keeps them in on the hard days.

I love Fastic, I even told my friend Ashley about it and now we fast together and keep up with one another and encourage each other within the app.

With great built-in community support through small groups of other users starting at the same time on WhatsApp with a moderator.

It's nice to have some people who are on the same journey at the same point as I am.

Explaining the 'why' makes Fastic a teaching tool for fasting beginners

Beyond the timer, the app offers lessons, articles, and recipes that explain how to do intermittent fasting and eat well. For a beginner who doesn't know where to start, this lowers the entry barrier and builds the habit through understanding rather than blind rule-following. Users name this educational layer as the reason they stay for years.

This is a really great app that has helped me understand intermittent fasting and what the best metrics are for my age and body type.

Lots of lessons on how to us IF correctly, how to eat better and live healthier.

lt is FULL of great information, and it's pretty easy to use, once you get the hang of it.

Bundling fasting, food, water, and steps into one screen is the core of loyalty

Users stick with the app because it closes the entire weight-control ritual in one place: the fasting window, calories and macros, water, steps, weight. It removes the hopping between several apps and lowers the friction of daily tracking. For a weight-loser who values simplicity, this all-in-one flow is what makes Fastic a product they return to.

All in one, you track your meals, water intake and steps

It has everything I need, fast and easy to submit my food and water intake etc. Excellent meal recipes for inspiration, including your generated shopping list of ingredients

A fasting timer and food diary in 1 app makes it very convenient to use for tracking diets.

Real weight-loss results are the strongest proof the method works

The warmest reviews are about results: people lose 20, 50, 56 pounds, one user 100 over two years, and keep it off. The app supplies structure, motivation, and habit, and for many it's the only thing that has ever worked — and that proven payoff is what creates years-long loyalty and word-of-mouth.

I love this app. It helped me so much when I started my fasting, in the last year I lost 56lbs.

Still use it today lost over 50lbs by sticking to the time I choose its very helpful!

I used this app back in October 2020-2022 and I lost 100lbs intermittent fasting!

Weak spots

What users hate

A long quiz before showing the product is a filter that drives away the curious

Before a user sees a single screen of the app, they're marched through dozens of personal questions for 10–30 minutes. People who searched for a 'simple fasting timer' bail halfway and uninstall before ever reaching the value. The onboarding was designed as a funnel to payment but works as a wall — it filters out exactly the people who wanted to try first.

makes you go through so many questions at the start I just uninstalled and went with a different app

Took 15 min just to set up the app. Why people complicate it. Waste of time. I just need a timer for fasting track

Useless. I downloaded It expected me to reply to around personal 50 questions . I uninstalled

A thin, inaccurate food database undercuts the AI scanner's own promise

The scanner sells itself on 'no manual entry,' but the database is so small and inaccurate that half of foods aren't found and calories land multiples off. Users end up typing and correcting everything by hand — the exact chore they were fleeing. The app sells automation but delivers manual labor, and that's what breaks trust in the numbers.

doesn't recognize most of my food scanned or can't find the food I'm looking for such as "egg substitute", and if it does, the nutritional facts are always wrong

it says a double Whopper with cheese is 100g for 266 calories, but no one weighs out 100 grams of a burger. The whopper is 1000 calories.

The food database seems to be very small and I am constantly being asked to add my foods which is time consuming and does not always work.

Gamification and 'frosties' destroy accuracy for serious fasters

Built to demand daily engagement, the app starts inferring behavior for you: skip a few days and it auto-marks 'frosties' — freebie non-fasting days — and treats long fasts as unfinished. For the disciplined faster who came precisely for accurate tracking, this turns the history into fiction that's painful to correct by hand.

When I fast for long periods, it constantly assumes I am not fasting and marks my days as "frosties" which are freebie nonfasting days. A pain to edit!!!

it actively helps you not fast by letting you use "frostys" to keep your "success" streak.

the app would rearrange fastings days and miss hours of fasting for no reason

Rigid measurement units alienate anyone who doesn't think in grams

Food logging only accepts portions in grams or fluid ounces — no cups, spoons, or package servings. American users, who measure food differently in the kitchen, are forced into a calculator at every meal. A small product decision makes the core daily task — logging what you ate — so laborious that people give up.

why wouldn't you have the option for items in cups and/or Tablespoon/teaspoon measurements? Not everyone measures using the metrics system

It allows you to control portions only in grams or fluid ounces; I am no conversion genius.

Converting the units from oz to g for each item would be great. It's annoying having to do all the math yourself.

No fasting widget removes the app from sight at the exact moment of fasting

The app has widgets for steps, water, and weight, but none for fasting itself — the core function. Without it, the timer isn't visible on the home screen, and users lose the constant nudge that they're in a fasting window. Long-time paying users have asked for years and been ignored, which pushes them to competitors over one missing piece.

Three years, and we still don't have a fasting widget. They have widgets for everything else that I don't track, but I need something front and center to remind me I'm fasting

please add a widget for fasting time. You have widgets for steps, for drinking water, and for wieght, but there is no widget for the actual thing this app for.

one thing that would make it 5 stars is adding a fasting widget. Please add that feature!

Refusing to sync with fitness ecosystems makes the app an island

The app won't pull from Samsung Health, Google Fit, Fitbit, or Garmin, forcing users to manually duplicate steps, weight, and sleep. For anyone with an existing health ecosystem, that means double entry and inaccurate numbers — and a direct reason to leave for Cronometer or Noom. The missing integrations turn 'all-in-one' into just another siloed data source.

This app doesn't work with ANY tracking apps like Samsung Health or Goggle Fit.

to pay for the full version for a year in order to auto sync from Google Fit to Fastic. At first it would sync, then it stopped.

for years now I have been using Samsung health. But I could not get this app to sync with SH. so I am using another app now.

The product's main hook sits behind a monetization wall that hits before value is proven

Strategically, Fastic puts its best feature — the AI food scanner — and basic tracking behind a wall and a barrage of promos that fire on every action: start fast, end fast, log a meal. Users hit the wall before the product proves its value; long-time fans who praised the free version for years leave at the exact point where monetization friction outweighs benefit. Churn lands before activation, not after.

Start a fast: ad. End a fast: ad. Log food: endless ads you can’t exit without closing the app. Basically unusable unless you pay.

Good app, but it is crippled by ads if you are on a free plan. Any time you want to log a meal or end a fast, watch an ad.

This App will also Shove ADS for the premium version down your throat through your notifications instead of notifying you on your fasting times

The whole nicheIntermittent fasting: what to build and where rivals fall shortSee the niche breakdown