Cultivar

Cultivating You.

A habit tracker built on the research on how habits actually form. Every rule in it comes from a published study, and the sources are all here.

Get it on Google Play

Know thyself γνῶθι σεαυτόν

Cultivar reads your own record back to you: which habits hold your week together, which ones quietly cost you, and when each one really happens.

Kept at shows the time of day each habit is actually done, and whether that time is steady or scattered.
Mood asks, after each habit, one optional question: how did it feel? Crossed with how often you do it, that sorts your habits into thriving, grinding, reluctant and fading.
Cairn, if you turn him on, writes a weekly observation about how your habits connect.

The evidence: time of day and context · how a habit feels

Nothing in excess μηδὲν ἄγαν

Consistency builds a habit; intensity doesn't. Cairn may only ever suggest asking less of yourself: rest a day that carries too much, or shorten a schedule you meet three days in five. He never suggests doing more. One habit is enough to start.

The evidence: consistency over intensity

Make a pledge, and ruin is near ἐγγύα, πάρα δ' ἄτα

A streak is a pledge never to miss, and breaking it costs everything. Cultivar has no streak to protect. In the research, one missed day barely registers and a missed week is what matters, so that is what the app notices. Every day starts fresh, and a day with nothing scheduled is a rest day, not a zero. Nor does it promise a habit in 21 days: the time it takes ranges from under three weeks to over eight months.

The evidence: what a missed day costs · streaks · no countdown

How it works

Each habit due today is a bead of water. Tap it, and the day's plant grows.
The Garden keeps the year: one sprout per day, taller the more of that day you did.
Set a habit once, for every day or chosen weekdays, with a target if you like: 20 pages, 10 minutes.
No account. Your habits stay on your phone, and you can save a copy to a file whenever you like.
Every screen and chart is free. Supporting Cultivar runs Cairn on the app's own key, or you can use your own Claude, ChatGPT or Gemini key.

Who made it

Cultivar is made by one person, a licensed master social worker (LMSW) with three undergraduate and two graduate degrees. It is a habit tracker, not therapy or a clinical tool, and nothing in it is medical or mental-health advice.

The three headings are the maxims carved at the entrance to Apollo's temple at Delphi, discussed together in Plato's Charmides.