Zen: Habits & Accountability

Build the habits you want. Quit the ones you don't. Shared only when you say so.

Zen works offline. No accounts, no ads, no tracking, no subscriptions. Every habit, day, and note lives in a local database on your iPhone, and the app reads and writes it without a network.

Start from 236 habits that are already worded, across 16 categories, or write your own. Pick the days it repeats, a start and end date, a reminder, an icon, and a color.

Four kinds of goal. Run a timer, count reps, or work through rounds one at a time, and the day completes when the work does. Or name something you are quitting: there is no target to hit, the day is yours unless you say you slipped, and every urge you let pass is one tap to record. A day that fell short keeps what it recorded, because four rounds of seven is not the same as never starting.

A running timer keeps going on the Lock Screen, in the Dynamic Island, and from the app icon.

Time away does not count against you. Set yourself to Vacation, Sick or Break: reminders stop, and the days you are away are skipped rather than missed, so a streak waits for you instead of ending.

Habit strength turns your recorded history into a 0-100 estimate. Gains slow over time, misses lower it gradually, partial work counts for part of a day, and skipped days stay neutral. Read it beside your current streak and a full year of completions.

Complete a habit wherever you are. Five Home Screen widgets carry today, weekly progress, strength, streak, and history. Apple Watch runs the work itself: a timer that counts down, a counter with its tally, and rounds worked one at a time, with today's tally on the watch face. Ask Siri to mark a habit done. iPad lays the app out for its own width.

Challenges are optional. Share a habit over iCloud with the people you invite. Everyone keeps their own habit, nothing is public, and there are no profiles.

There is no Donado Labs server to hold your data, so the device is where it is. Optional sync passes it between your own Apple devices through your iCloud account, and you can take a copy of everything as a JSONL file whenever you want it, once, or kept up to date in your iCloud Drive.