Onelify

Stop tracking 10 habits and finishing none. Onelify focuses you on a single habit for 66 days — the science-backed length of forming a new routine.

Onelify is the habit tracker for people who are tired of overcomplicated apps that track twenty things and help with none.

The premise is simple: Pick one habit. Do it for 66 days. Watch it become who you are.

WHY ONE HABIT? Decades of behavior research keep landing on the same conclusion: people who focus on a single behavior change succeed dramatically more often than people who try to change several at once. Onelify is built around this idea — by design, you can only track one habit at a time.

WHY 66 DAYS? A widely cited study from University College London found that new behaviors take, on average, 66 days to become automatic. Not 21. Sixty-six. Onelify shows you exactly where you are on that journey.

WHAT'S INSIDE • A single large "Done" button — tap once per day, that's it • A streak counter that builds your momentum • A 66-day grid that visualizes your full journey • Optional daily reminders at the time you choose • Beautiful, minimal design with light, dark, and tinted icons • 100% offline — your data never leaves your device • No accounts, no tracking, no ads, ever

WHO IT'S FOR • Anyone who has downloaded ten habit apps and given up on all of them • People starting a new fitness, reading, meditation, or learning routine • Minimalists who want one tool that does one thing well • Students, creators, and professionals building daily practice

PRIVACY FIRST Onelify collects zero data. There are no servers, no analytics, no third-party SDKs. Your habit and your progress live only on your device.

Start your 66 days today.