Habit Tracker

**Habit Tracker** is the calm, private way to build habits that last — one tap a day, no account, no cloud, no tracking of what you track. **Check in with one tap** - Tactile check keys with satisfying haptics; count habits (8 glasses, 20 pages) fill a progress ring per tap - Habits grouped by Morning, Afternoon, Evening and Anytime - Every day, X times a week, or specific weekdays - Slide a habit to skip a rest day or edit it; undo on delete **See your year** - A GitHub-style heatmap for every habit — tap any past day to fix it - A combined heatmap of all your habits, plus weekly rhythm and time-of-day insights - Share a beautiful image of your habit's year **Streaks that forgive** - "Never miss twice": a single missed day pauses your streak instead of resetting it - Skip / rest days that never count against you - Habit strength score that rewards long-run consistency - Milestone badges at 3, 7, 21, 30, 66, 100 and 365 **Built on the science** - Cue → routine → reward: every habit gets an "After I…, I will…" cue - The 66-day formation curve from Lally et al. (2010) shows how close a habit is to automatic - 20+ tiny starter habits with research-backed cues, and a short guide to why they work **Yours, offline** - No sign-up, works without internet - Backup file you can restore on any phone, plus CSV export - Home-screen widget to check in without opening the app - Gentle reminders with a "Mark done" button, and an optional evening check-in - Night, Day, multicolour Dawn and Auto themes ## What's new (v1.0.0) ``` Welcome to Habit Tracker 1.0! • One-tap check-ins with satisfying haptics • GitHub-style year heatmap for every habit • Morning, afternoon & evening groups • Daily, X times a week or chosen weekdays • Forgiving streaks: never miss twice • 66-day formation curve & insights • Night, Day & colourful Dawn themes • Home-screen widget, reminders, backup • No account. Fully offline. ``` ## Privacy / permissions - `POST_NOTIFICATIONS`: habit reminders and the optional evening check-in only. - `RECEIVE_BOOT_COMPLETED`: re-arm inexact reminders after a reboot or clock change. - `INTERNET`: ads (AdMob) and anonymous analytics/crash reports only — habit data never leaves the device. - No exact alarms, no account, no cloud sync. Analytics (release only) never include habit names, cues or logged values. - Data safety form: "Personal info / App activity — not collected" for habit content (stored on device only); declare AdMob's device identifiers and Firebase Analytics/Crashlytics diagnostics.