Habit0 — Habit Tracker

Cross-platform React Native habit tracker with streak rewarding, smart AI reminders, history calendar, and automated GitHub Actions builds for iOS and Android.

TypeScriptReact NativeExpoRealmiOSAndroidGitHub Actions
View source on GitHub
Habit0 — Habit Tracker

About

HabitØ is a mobile habit tracking app built with React Native and Expo, targeting iOS and Android.

Tech Stack

  • React Native 0.81.5 with Expo SDK 54
  • TypeScript throughout
  • Realm (local offline-first database)
  • AsyncStorage for settings
  • Expo Notifications for reminders
  • React Navigation (Stack + Bottom Tabs)
  • GitHub Actions for automated production builds

Core Features

  • Today View with all scheduled habits and progress tracking
  • Habit categories: Essential, Flexible, Weekly
  • Visual streak badges, total streak counter, and history calendar
  • Dark/Light mode with system preference support
  • Guided onboarding flow for first-time users

Smart Notifications

  • Morning reminders (7:00 AM default), evening summaries (9:30 PM)
  • AI-powered optimal timing reminders
  • Per-habit custom reminders
  • Streak break warnings

Advanced

  • Flexible or strict streak calculation modes with configurable grace days
  • Archive habits without losing history
  • JSON data export (dev mode)
  • Automated CI builds to Google Play and iOS via GitHub Actions