A simple habit tracker for building routines that last
This free habit tracker gives every habit a row of seven days. Tap a day when you have done it, and the tracker keeps count for you: how many days you have managed this week, your current and best streaks, and how consistent you have been over the last 30 days. A monthly heatmap shows the bigger picture at a glance.
Not every habit needs to happen daily, so each one has its own weekly target — every day for reading or water, three times a week for the gym, once a week for a long call with family. Streaks follow that target, which means a rest day you planned for never breaks your chain.
There is no account and no app to install. Your habits are saved in your own browser on this device and never uploaded. Export a backup file whenever you like, or import it on another phone or computer to carry on there.
How to use the Habit Tracker
- Type a habit in “New habit” — or tap one of the quick-add suggestions — choose a target and a colour, then press “Add habit”.
- In the weekly grid, tap a day to tick it off. Tap it again to undo. Today has a bold outline; future days are locked.
- Use the arrows to look at earlier weeks and fill in days you forgot. “This week” jumps back to today.
- Read the line under each habit: your current streak, your best streak and your completion rate for the last 30 days.
- Scroll to the monthly heatmap to see all habits together, or pick a single habit to see — and edit — its whole month.
- Press the pencil to rename a habit or change its target or colour, and “Export JSON” to save a backup.
Habit Tracker features
Weekly targets
Set anything from once a week to every day. Progress shows as “3/5 this week” and turns solid when the target is met.
Fair streaks
Daily habits count consecutive days; habits with a weekly target count consecutive weeks that hit the target. Today does not break a streak until it is over.
Monthly heatmap
Shade each day by how many of your habits you completed, or view one habit’s month and tap past days to correct them.
Honest feedback
Short notes tell you what is left this week — including when a target is no longer reachable — without guilt-tripping or fake praise.
Monday or Sunday weeks
Choose the first day of the week to match your calendar; targets and streaks follow your choice.
Private by design
Everything stays in your browser. Export and import JSON backups to move between devices, with check-ins from both copies merged.
How streaks and completion rates are calculated
For an every-day habit, the current streak is the number of consecutive days ticked, counting back from today. If today is not ticked yet, counting starts from yesterday, so your streak is not shown as broken while the day is still open. The best streak is the longest unbroken run ever recorded.
For a habit with a weekly target — say three days a week — the streak counts consecutive weeks in which you ticked at least three days. The current week only joins the streak once its target is met, and it only breaks it once the week has ended short.
The last 30 days rate compares the days you ticked with the days your target asked for. Three ticks in a week against a target of three is 100%; for a habit you added ten days ago, only those ten days are counted, so new habits are not penalised.
Tips for making a habit stick
- Start smaller than feels useful. Two pages of reading or a ten-minute walk is easy to repeat, and repetition is what builds the habit.
- Attach it to something you already do. “After I pour my morning coffee, I write three lines in my journal” gives the habit a reliable cue.
- Be realistic with targets. Four gym sessions a week that actually happen beat a daily plan you abandon in week two.
- Never miss twice. A missed day is normal. Making the next day count is what keeps the routine alive.
- Track only a few habits at once. Three to five is plenty; add more once the first ones feel automatic.
Pair it with the right tools
Habits are things you repeat; one-off jobs belong in a to-do list. For a daily deep-work habit, run your sessions with the Pomodoro timer and tick the day here when you finish. If your habit is about health, the water intake calculator and sleep calculator can help you choose a sensible daily goal to track.
Habit Tracker FAQ
Is this habit tracker free?
Yes. The habit tracker is completely free, with no account, no subscription and no limit on the number of habits or the length of your history.
Where is my habit data saved?
In your browser’s local storage on this device. It is never uploaded. Clearing your browser’s site data removes it, so use “Export JSON” to keep a backup.
Can I use the habit tracker on my phone and computer?
Yes, but they do not sync automatically because nothing is stored online. Export a JSON file on one device and import it on the other. Check-ins from both copies are combined, so nothing is lost.
Can I tick off a day I forgot?
Yes. Use the arrows above the weekly grid to go back to an earlier week, or choose the habit in the monthly heatmap and tap any past day. Future days cannot be ticked.
Why didn’t my streak reset when I skipped a day?
If the habit has a weekly target lower than seven, streaks count weeks that met the target, not individual days. Planned rest days therefore never break the streak.
How long does it take to form a habit?
There is no fixed number. A widely cited 2009 study by Phillippa Lally and colleagues at University College London found that participants took between 18 and 254 days — a median of 66 — for a new behaviour to become automatic. Consistency matters more than the exact number.