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Yes. Habit is 100% free with no in-app purchases, no subscriptions, and no ads. Every feature is available from day one.

Yes. Habit syncs your habits and check-ins between your devices through your own iCloud (you need to be signed in to iCloud). It stays private to you — we run no servers and cannot read it. It is also included in your iPhone's iCloud or iTunes backup if you have backups enabled in iOS Settings.

Yes. Sign in with the same Apple ID on the new iPhone and install Habit: your data syncs back through iCloud. Restoring from an iCloud or iTunes backup works too.

Your streak counts consecutive days you completed your habit. Crucially, it skips days that aren't in your schedule — so a rest day won't break your gym streak. Your streak is also preserved if today isn't checked in yet.

The Strength Score is a 0–100 number that reflects your consistency over time. You earn +10 points for each completed day and lose −5 points for each missed scheduled day. It's calculated from the full history of your habit.

Four types: Daily (every day), Specific Days (e.g. Mon/Wed/Fri), Times Per Week (e.g. 3x/week on any days you choose), and Every N Days (e.g. every 2 days). Tap the info icon when creating a habit for detailed examples.

Challenges are ready-made habits with a finish line — six of them, from 7 to 30 days: reading, early rising, hydration, calm, screen-free evenings and moving. Joining one creates the habit for you, and you check it off from the Today tab like any other. Every challenge has spare days built in, so missing a day doesn't end it. Finish one and you earn a badge, alongside the badges for streaks and total check-ins.

Go to iPhone Settings → Notifications → Habit and make sure notifications are enabled. The app will also show a warning on the Habits tab if system notifications are disabled.