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Nothing. 12 Challenges is free: no subscription, no in-app purchases, no ads.

Exclusively on your iPhone. There are no servers, no accounts, no tracking and no sharing with third parties. See the Privacy Policy for details.

12 Challenges deliberately has no cloud sync of its own. Your data still moves with you automatically if you set up the new iPhone the way Apple intends: via direct device-to-device transfer or by restoring an iCloud or computer backup. Just reinstalling the app is not enough: without a backup restore it starts empty.

There is currently no data export. Deleting, however, is always possible: in the app’s settings under “Delete All Data”, or by uninstalling the app.

At 85% of the days; for a 30-day challenge that’s 26. A few missed days won’t cost you the month. If you check off every day of a full challenge, it counts as a perfect month. Below the threshold the challenge ends as “ended” and moves to the archive.

Yes. Today and yesterday can still be changed; older days are locked. A missed day doesn’t end anything either: thanks to the 85% threshold you can miss up to four days out of 30. Only your streak restarts from zero after a real gap, and hardcore mode plays by stricter rules.

In hardcore mode a challenge only counts as achieved at 100%: every single day matters. As soon as a missed day is confirmed, meaning its edit window has closed, the challenge ends immediately. For everyone who wants to switch off the safety nets on purpose.

Long-press your Home Screen, tap “+” and choose 12 Challenges. Use “Edit Widget” (long-press the widget) to pick which challenge it shows. You can check in right from the widget without opening the app. There is also a Control Center control: customize Control Center, tap “Add a Control” and choose 12 Challenges.

A daily reminder at a time of your choice (8 PM by default), optionally with a custom time per challenge. On top of that: a more urgent warning if you skipped yesterday, a final-day nudge, and a reminder on the 28th to plan your next challenge. Each one can be turned off individually.

You get a monthly review with final status and streak, stored in the archive. If things are going well, you can continue the challenge right into the next period, and your streak carries on seamlessly.