hAiity

Habits, GitHub style. A native iOS habit tracker where every habit is a contribution graph.

Website · Privacy · Part of the aiity family

Habit list, light Habit list, dark

What it is

A habit tracker built around one idea: a year of squares. Check in, paint a cell. The longer the run, the brighter it gets.

What it does

Habits are calendar rules. Not just daily or weekly — every N days, weeks, months or years; specific weekdays; the 3rd Tuesday or the last Friday of the month; start dates and end conditions. Days a habit isn’t due are transparent: they never break a streak.

Your colours. Six built-in palettes, or pick any colour and the app computes the five-step ramp for light and dark itself. Per-habit overrides, and the app icon follows along.

Fill in the past. Forgot Tuesday? Long-press the graph, pick the day — or several at once — and it’s recorded. One undo puts it all back exactly as it was.

Widgets. A pure contribution graph, a roster of every habit, Lock Screen accessories, and a Control Centre button to check off without opening the app.

16 languages, German through Korean.

Recurrence editor Custom colour ramps Backfilling past days

Where your data lives

On your phone. That’s the whole answer.

If you’re signed into iCloud it also mirrors to your own private iCloud database, so a second device catches up on its own. There is no hAiity account, no sign-up, and no server of ours anywhere in the path — because there is no “we” in the data path to have one.

The sync is built so it can’t lose a day: check-ins merge rather than overwrite, and a conflict resolves by keeping both sides.

Status

In TestFlight, moving toward the App Store. iPhone, iOS 17 and later.

Source

This repository is the shop window. The app’s source lives in a private repository — if you’d like a look, ask.

_{Built with Claude Code}