66 Habits - Habit Tracking

Gorgeous, simple and free habit tracking grounded in real research on how habits form, not the 21-day myth.

21 days doesn't make a habit. It gets you 66% of the way. That's why the myth feels true, and why it fails you anyway. 66 Habits is built on the real science: 66 repetitions, proof you actually did it, and an app that gets quieter as you get better.

Check off a habit once a day. In the early days, back it up with a photo or a line of text: proof matters most before a habit sticks. After you're over the hump, the app asks less of you, because you need it less.

Every habit tracks two honest numbers: a streak that resets when you miss a day, and a rep count that never does. Progress is shown as a percentage grounded in published research on how habits actually form, not an arbitrary badge or a made-up score.

66 Habits is also a genuinely beautiful app: gradient habit cards, a calm color system, and widgets designed with the same care as the rest of the interface. The design stays simple on purpose: nothing to configure, nothing to dig for.

A widget keeps today's habits on your Home Screen. A calendar shows every day you've shown up. A private journal holds the notes and photos behind each check-in, stored on your device and in your own iCloud account, never on a server we run.

66 Habits has no accounts, no ads, no tracking, and nothing to unlock. It has one job: to help a habit actually stick, at the pace real habits take.