Where is my habit data stored?

All data is stored in your browser's localStorage. It persists between visits but is specific to your browser and device. Clearing browser data will erase your habit history.

Can I track multiple habits at once?

Yes, you can add as many habits as you like. Each habit is tracked independently with its own streak counter and heatmap.

What counts as a streak?

A streak is the number of consecutive days (including today) on which you marked a habit as done. Missing a day resets the current streak, but your longest-ever streak is always preserved.

Can I delete a habit?

Yes, each habit card has a delete button. Removing a habit also deletes all of its historical data from localStorage.

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Habit Tracker

Track daily habits with streaks, completion rates, and a visual 30-day heatmap calendar.

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About this tool

Add any habits you want to build, then check them off each day — all data is saved in localStorage so it persists across sessions. Each habit displays its current streak, longest streak, and 30-day completion rate. A GitHub-style contribution heatmap shows which days were completed (green) and which were missed (gray) over the past 30 days.

How to use

1 Click 'Add Habit' and type the name of a habit you want to track, then press Enter or click 'Add'.
2 Each day, click the circle button next to each habit to record your completion.
3 View your current streak, longest streak, and 30-day completion rate for each habit.
4 Click 'Show calendar' on any habit to see your progress over the past 30 days as a heatmap.

Frequently Asked Questions

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