An iPhone habit tracker

A cairn of five balanced, painted stones — the Routine Habit mark

Some things you build one day at a time.

Routine Habit tracks how habits actually form — not the 21-day myth. One grace day a week. No streak-shaming. Everything stays on your phone.

View on the App Store

Built on research

Real habits take about 66 days — not 21.

The "21 days" number traces back to a 1960s plastic surgeon's memoir, not a study. Research out of University College London put the real average closer to 66 days — and it varies by habit and by person. Routine Habit tracks where you actually are on that curve, in three stages that change how — and how often — it reminds you.

Day 1–14 Starting out

One reminder, same time every day — the habit is still fragile, so the cue stays steady.

Day 15–59 Building

The reminder shifts to when you actually tend to show up, based on your own pattern.

Day 60+ Automatic

Reminders fade to a light touch — three nudges a week instead of daily — because you don't need the app to remember anymore.

What you get

No account. No streak anxiety. Just the habit.

One grace day a week. Miss a day and your streak doesn't reset to zero — life happens.
Habit stacking. Anchor a new habit to one you've already built, instead of starting from nothing.
Temptation bundling. Pair the habit with a reward you actually want, right where you set it up.
A strength meter, not just a streak. See how automatic a habit is becoming, not just how many days in a row.
Home Screen, Lock Screen, and Apple Watch. Widgets and complications keep today's habits in view without opening the app.
Fully on-device. No account, no server, no analytics. Optional iCloud sync uses your own account, never the developer's.

Some things you build one day at a time.

Real habits take about 66 days — not 21.

Today's habits, your real progress, at a glance.

No account. No streak anxiety. Just the habit.