They need a picture of their actions over a long period: what was done, when the breaks were, and which records can be migrated. A streak of days is no substitute for that history.
One of the most mature trackers around: users stick with it for years and mention 6-10 years without switching. Fast yes/no/skip one-tap logging, tags for grouping, and CSV export. No cross-device sync.
評価点：You can mark not just 'done' but also 'not done', which creates an honest picture of the habit. Tags for grouping and stats with graphs keep users coming back for years.
不満点：No cross-device sync: data does not transfer between iPhone and iPad. The free plan is limited to three habits, which is not enough for systematic tracking.
向いている人：People who want to see an honest long-term picture of their habits with numbers and export, not just checkboxes.
A powerful tracker for people who think in terms of measurable goals: you can track weight, runs, finances, and habits with graphs. Reminders are reliable and retroactive logging is available.
評価点：Tracking types: yes/no, numeric, time, percentage, suitable for any measurable goal. Visual progress charts by week and month. Flexible-schedule reminders work reliably. Apple Health integration.
不満点：Tracking resets at midnight with no setting for night-shift workers. No cross-device sync without a paid upgrade. Reminders occasionally fire late.
向いている人：People with measurable long-term goals, such as weight loss, workout frequency, or financial metrics, who need progress charts.
A flexible and concise tracker with numeric goals, customizable success metrics, and detailed streak statistics. Long-term users value stability. Development has nearly stopped and bugs sit unresolved for months.
評価点：Numeric goals rather than just checkboxes: how much water you drank, how many minutes you meditated. Detailed streak stats and completion percentages. Quick logging from a widget.
不満点：The developer barely updates the app and bugs go untouched for months. A shift from a one-time purchase to recurring access happened without warning for loyal users. No built-in reminders beyond standard iOS notifications.
向いている人：Analytical users who care about data: percentages, charts, and numeric measurements, without game elements.
One of the best one-tap time trackers with instant task switching. Users keep it for years for personal time accounting and work reporting. This is not a habit tracker in the classic sense: no streaks or habit reminders.
評価点：Instant one-tap timer start. Clear pie chart of time spent by category. Retroactive logging and customizable icons. One-time purchase instead of a monthly subscription.
不満点：No streaks, habit reminders, or flexible scheduling: this is a time tracker, not a habit tracker. Alarm-style notifications are unreliable. Apple Watch sync breaks occasionally.
向いている人：Freelancers, students, and anyone who wants to see where their time actually goes. Not suitable for those looking for a classic daily habit tracker.
The best workout log in the niche, no caveats: instant set entry, rest timer, weight progression per exercise, and a social feed with real accountability.
評価点：Per-exercise weight history that shows immediately whether you improved over the past weeks. A social leaderboard with friends on the main lifts. Wide feature set available without any restrictions. AI workout program builder.
不満点：Battery drain during a workout is significant. On Apple Watch you can only enter weight in 1 kg increments, not 0.5 kg. No search through workout history.
向いている人：Anyone who goes to the gym and wants to track weight progression, from beginners to competitive athletes.
