Habit Tracker
Add a habit, tick each day you do it. Everything saves in your browser — no account, no app, no reminders nagging you.
Why ticking a box works
Tracking a habit changes the behaviour, not just the record of it. The effect is well documented in behaviour research: measuring something makes it salient, and a visible run of ticks creates a small but real reluctance to break the chain. It also replaces a vague sense of "I've been meaning to" with an honest number. The common claim that habits take 21 days to form is a misreading of a 1960s plastic surgery observation — the actual research puts it at a median of 66 days, with enormous variation.
Choosing habits that stick
- Make it embarrassingly small to start. "Read one page" beats "read for an hour" because it survives bad days, and the hard part is showing up, not the volume.
- Make it binary. A habit you can definitively tick or not tick works; "eat better" does not.
- Attach it to something you already do. "After I make coffee, I read one page" is far more reliable than an intention with no trigger.
- Track no more than three or four at once. A grid full of gaps is demoralising and stops being useful.
- Never miss twice. One missed day is noise. Two in a row is how a habit quietly ends.
No account, and no nagging
Habit apps generally want an account, notifications and often a subscription. This is deliberately none of those things.
Your habits are stored in your browser's local storage. Nothing is uploaded, there is nothing to sign into, and no notification will ever appear. The trade-off is that the data lives on one device and clearing your browser data clears it — use copy as text if you want a record elsewhere.
Bookmark the page, or add it to your phone's home screen, and it opens like an app.
How to use the Habit Tracker
- Add a habit, phrased as something you either did or did not do today.
- Tap a square for each day you complete it. You can fill in past days you missed marking.
- Watch the streak and completion rate build.
- Everything is saved in your browser automatically.
Frequently asked questions
Is my data private?
Completely. Habits are stored in your browser and never transmitted. There is no account and no server involved.
Will it sync between my phone and laptop?
No. Local storage is per device and per browser. Use "copy as text" to move a record across.
How long does it take to form a habit?
Research by Phillippa Lally found a median of 66 days to reach automaticity, ranging from 18 to 254 depending on the person and the habit. The popular 21-day figure has no research behind it.
Can I tick off past days?
Yes. Any day in the 30-day grid can be toggled, so you can fill in days you forgot to mark at the time.
What happens if I miss a day?
The streak resets, but the completion percentage keeps the fuller picture. Missing one day matters much less than missing two in a row.
Related tools
Last reviewed September 4, 2026. Results are estimates for general information only.