22 Hours: Aligner Tracker
Track your aligner wear time
About
This app helps users track their clear aligner wear time accurately. It provides simple one-tap logging for aligner insertion and removal, offering insights into daily progress, streaks, and treatment history. The app also includes helpful reminders and progress photo capabilities.
What's New in 22 Hours
1.1
July 16, 2026
NEW • Guided feature tour. Quick tips walk you through each screen the first time you visit. • Reminder intensity. Choose Gentle, Steady, or Persistent nudges in Settings. • Undo a refinement. If you start a new one and change your mind, revert to your previous treatment. • What's New announcements. A short recap greets you in the app after each update. IMPROVED • Bigger Help guide. Rewritten from the ground up, it now covers 20 topics. • Fresher reminders. Notifications vary their wording so they never sound like a broken record, and Siri replies are more vibrant. • Easier date edits. The aligner date editor now opens as a gentle pull-up sheet. • Faster refinement setup. Hold to repeat on the aligner-count stepper, which now validates your count. • Reliable reminders. They are now timed to land right when they matter. • Fuller history. Snaps and History now show entries beyond your current treatment. • Refined Settings. The About screen is cleaner, with unified headers and clearer footnotes. • Scroll to top. Tap the active tab again to jump straight back to the top. FIXED • Time-zone timing. Crossing time zones no longer throws off reminders or calendar events. • Duplicate calendars. Extra "22 Hours" calendars no longer pile up on Mac. • Backfill start dates. Treatment start dates now update correctly after you backfill past days. • Snaps visibility. Progress photos taken outside your current treatment no longer stay hidden. • Switch cleanup. Completed switches now clear their leftover calendar events. • Calendar resync. Calendar events resync properly when you switch aligners.
MoreFAQ
How does 22 Hours track aligner wear time?
22 Hours uses a simple one-tap system. You tap when you put your aligners in and tap again when you take them out. The app then automatically calculates your wear time and out-time.
Can I see my progress with 22 Hours?
Yes, 22 Hours offers detailed stats and history. You can view a calendar with compliance rings, weekly averages, compliance percentages, lifetime hours, and a 14-day wear chart.
Does 22 Hours send reminders for aligner changes?
Yes, 22 Hours provides gentle reminders for your tray switch routine. It sends a notification the night before and a backup the next morning, and can optionally sync switch days to your iOS Calendar.
Can I take progress photos with 22 Hours?
Absolutely. 22 Hours allows you to capture unlimited progress photos tagged to your current aligner number. You can also bulk import existing photos, and all are saved to a dedicated album.
Is my data safe with 22 Hours?
Your data is synced privately across your devices via iCloud. You can also export your full history at any time and restore from backup when switching devices.
Does 22 Hours have ads?
No, 22 Hours is ad-free. The app is designed for a focused and uninterrupted user experience, ensuring no advertisements interfere with your tracking.
What devices does 22 Hours support?
22 Hours is available for iPhone and iPad, ensuring you can track your aligner wear on your preferred Apple devices.
How often is 22 Hours updated?
The latest version of 22 Hours is 1.1, which was last updated on July 16, 2026. This indicates regular maintenance and potential feature additions.