One habit, on purpose
Most habit trackers hand you a list and let you add fifteen things you will abandon by Thursday. OneStreak lets you track exactly one. That constraint is the product, not a limitation.
The habit tracker that only tracks one habit
Pick the single habit that actually matters and keep the chain alive by tapping a Home Screen widget once a day. No list to maintain, no second habit competing for your attention.
Download on the App StoreWhat it does
Log it from the Home Screen
Tap the widget once a day. The streak goes up without the app ever opening — the fastest possible path between deciding to log and having logged.
A chain you can see
A 35-day heatmap shows the run you have built. Seeing an unbroken block of days is the whole psychological trick, and it is on the first screen.
One slip does not wipe the slate
A same-day grace period means missing today does not instantly reset months of progress. You have until the day ends to keep the streak alive.
Rename without losing anything
Made a typo at setup, or want to word the habit differently? Rename it any time and the streak and full history carry over untouched. That is free, not a paid feature.
Your data stays on your device
No account, no sign-in, no sync, no ads. Everything is stored locally on your iPhone and works with the network off.
OneStreak Pro
The free app is the whole core: pick a habit, tap to log, watch the streak, forever. Pro adds three things for people who want more from the history they are building.
- Streak insights — longest streak and completion rate over time
- Habit archive — switch to a different habit while every past streak stays saved with its stats
- Widget styles — change the widget's accent colour
Guides
How to choose a habit worth tracking, log it without friction, and keep the streak alive when you slip.
- How to track one habit and actually stick to itTracking one habit beats tracking ten. Here is how to choose the habit, make logging frictionless, and keep the streak alive when motivation runs out.
- Using a Home Screen widget to track a habit on iPhoneAn interactive iPhone widget lets you log a habit with one tap and never open the app. Here is how it works, how to add one, and why it beats reminders.
- Don't break the chain: why streaks workThe "don't break the chain" method turns a habit into a run of days you are reluctant to end. Here is why it works and where it goes wrong.
- Why one habit beats a list of fifteenHabit apps encourage you to add everything at once. Tracking a single habit is less satisfying to set up and far more likely to survive.
Common questions
- Is OneStreak free?
- Yes. Picking a habit, logging it from the widget, your streak count and the 35-day heatmap are all free with no time limit and no ads. OneStreak Pro is an optional subscription that adds streak insights, the habit archive and widget styles.
- Can I track more than one habit?
- No, and that is deliberate. OneStreak tracks exactly one habit. If you want a list of habits there are excellent apps for that — this one is built on the opposite bet, that a single visible streak beats a long list of good intentions.
- Do I need an account?
- No. There is no sign-up, no login and no server. Your habit and its history are stored locally on your iPhone.
- Can I change my habit later without losing my streak?
- You can rename your habit at any time and keep the streak and every logged day — that is free. Switching to a genuinely different habit archives the old one with its full history and starts a new streak from zero; that is part of Pro.
- What happens if I miss a day?
- There is a same-day grace period: a streak stays alive until the day fully elapses, so you have until the end of the day to log it. Miss a whole day and the streak resets, which is the point of a streak.
- Does the widget work without opening the app?
- Yes. The whole widget face is a button. Tapping it logs today and updates the streak without launching OneStreak at all.
- Does it work offline?
- Yes. Everything except the optional subscription purchase works with no network connection.