Habit tracking for iPhone
Habit OS asks you for the smallest version of each habit — two pages, one push-up, the glass of water — and records the days you showed up. It keeps the whole thing on your phone: no account, no cloud, nothing sent anywhere.
iPhone · free · no account, no ads, works in airplane mode
When you create a habit you write two things: what it is, and the smallest version of it that still counts. "Read" and "read two pages" are different instructions, and only the second one survives a bad evening. The minimum action is not a lowered standard, it is the floor you agreed to before you were tired — and on the days you do far more than it, nothing objects.
Most trackers give you one box per day, which quietly turns every habit into a yes-or-no exam. Habit OS appends an entry each time, so drinking water four times reads as four times, and a habit you did twice on Tuesday is not rounded down to the same mark as one you barely touched. Your averages come from those entries rather than from a checkbox.
Each entry can record how it felt on a five-step scale, whether the day was a hard one, and a short note. All of it is optional — tapping through with nothing written is a complete check-in. But over a month those marks are the part you will actually reread, because they say why the flat weeks were flat.
Each habit shows a strength reading built from two things: how consistent you have been lately and how often you do it. It is arithmetic on your own entries, not a grade. It moves slowly, it recovers, and it does not care how it compares to anybody else’s, because there is nobody else in the app.
The day view shows how far through today you are, the last seven days as a small chart, and your habits grouped by when they belong — morning, evening, exercise, study, health, environment, and the ones you are trying to stop. There is a quick pass that walks you through whatever is still undone, if you would rather clear the list in one go than open each card.
Open a single habit and you get a month grid plus the full stream of entries, with the notes attached. Empty days are drawn empty. There is no red mark for a miss, because a missing day is an absence of data, not a black mark, and it did not seem right to decorate one.
You can set several times for a habit and choose which weekdays they fire. They are ordinary local notifications, scheduled on the phone. The app never asks for notification permission at launch — it asks the first time you actually set a reminder, and if you never set one, it never asks. Pause a habit and its reminders stop with it.
The default is nearly black; there is also a warm paper light theme, and candy, forest and ocean. The interface ships in thirty-eight languages, picked up from the phone or chosen by hand. Small things, but this is an app you open on an ordinary Tuesday morning, and it should not look like a work spreadsheet.
The app does not design your habits for you, and nothing here is generated. What it does is refuse to let you write a habit that has no floor. This order works.
One thing is deliberately missing: there is no penalty. Break a run and the streak counter returns to zero, and that is the whole of the consequence. Nothing is deleted, nothing is locked, no screen tells you that you have let yourself down. The record is a record of what happened, and a gap in it is information, not a verdict.
Nothing. There is no account and no sign-in screen. Your habits, entries, notes, reminders and settings live in a database file inside the app on your phone, and the app makes no network requests at all — the string that would make one does not appear in the source.
There is no analytics SDK, no crash reporter, no advertising SDK and no attribution framework. Nothing counts your taps or reports which screens you opened, because there is nowhere for such a report to go.
The app declares no permission usage of any kind, so installing it raises no prompt. The one dialog it can ever cause is the system notification prompt, and only at the moment you set a reminder yourself. Never set one and you will never see it.
You can delete everything from inside the app, in one step. It clears every table and cancels every scheduled reminder, behind a confirmation. There is no cloud copy to chase afterwards, because there never was one.
The honest cost: nothing syncs to a second device and there is no server-side backup. What protects you is the phone’s own encrypted backup, which includes app data — worth checking is switched on rather than assuming. Lose the phone with no backup and the records go with it.
Free. This version has no in-app purchases, no subscription and no advertising of any kind.
Nothing is held behind a paywall either — no cap on how many habits you can run, no statistics reserved for an upgrade, no trial that turns into a nag screen. What is in the app is all of it.
No, and there is no way to make one. There is no sign-in screen in this version. You open it and you are in your own data.
No. Everything is stored on the one device, with no sync and no server-side backup. The app is iPhone-only. That is the direct cost of having no account, and it is worth knowing before you install.
The streak counter goes back to zero the next time you check in, and nothing else changes. The habit stays, the entries stay, the month grid simply shows an empty day. There is no penalty and no message about it.
Only if you set a reminder, and only at the times and on the weekdays you chose. It never asks for notification permission at launch — it asks the first time you set one. Pause a habit and its reminders stop too.
Yes. Each check-in adds an entry rather than ticking a box, so a habit you did four times reads as four times, and that is what the averages are built from.
Arithmetic on your own entries — how consistent you have been recently, weighted with how often you do the habit. It moves slowly and it recovers. It is not a grade and nobody else can see it.
Not in this version. You can share a short text summary of one habit or of everything through the system share sheet, but there is no file export. If a spreadsheet of every entry is what you need, this app does not do it yet.