Online Tool Store
Habit Tracker
Track daily habits on a streak grid, right in your browser — see your current and longest streaks, saved locally on your device between visits.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Saved only in this browser — nothing is uploaded, and clearing your browser data clears this too.
How it works
- Type a habit's name and click Add habit.
- Click today's square (outlined) whenever you complete it — or any past square to backfill a day.
- Your current streak and longest-ever streak update instantly below the habit's name.
How streaks are counted
Your current streak counts backward, day by day, from today (or from yesterday if you haven't checked in yet today) for as long as each day in a row is marked done:
current streak = consecutive completed days ending today (or yesterday, as a grace day)
Your longest streak is the longest run of consecutive completed days anywhere in your history, not just the current one — so an old 10-day run still shows even after a streak has since reset to zero.
FAQ
Where is my habit data stored?
Only in this browser's local storage, on your own device — it's never uploaded anywhere. That also means it won't show up on another device or browser, and clearing your browser's site data will erase it.
Can I mark a past day, not just today?
Yes — click any square in the grid to toggle that day, not just today. Useful for backfilling a day you forgot to check off.
Why does my streak still show after I haven't checked in today?
The streak counts back from the most recent day you completed the habit. If you completed it yesterday but haven't today, the streak is still shown as active — check in before the day ends or it resets to zero tomorrow.
How many habits can I track?
As many as you like — there's no built-in limit. Each gets its own streak grid.
What happens to my data if I clear my browser cache?
It will be deleted, since it lives in this browser's local storage rather than an account on a server. There's currently no export or backup option — worth keeping in mind for habits you've tracked for a long time.
How we compare
| Feature | Online Tool Store | Typical habit-tracking apps | Pen-and-paper habit chart |
|---|---|---|---|
| No sign-up or app install | ✓ | ✗ | ✓ |
| Calculates streaks automatically | ✓ | ✓ | ✗ (by hand) |
| Free, no ads, no premium tier | ✓ | Many gate multiple habits behind a paid tier | ✓ |
If you want a quick streak grid without creating an account or installing an app — and you're fine with it staying on this one device — Habit Tracker gets you the same at-a-glance streak view in one page.