Taejun Oh Software Engineer
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DoEveryday — Habit Tracker

DoEveryday is a calm, clutter-free habit tracker — one tap a day to build streaks and make habits actually stick. It runs as a web app, an iOS app, and a browser extension, all sharing a single Supabase backend, so a check-in on your phone shows up everywhere else. An Android app is in closed testing on Google Play. Available in English and Korean.

Website App Store Chrome Web Store

What it does

Habit tracking

  • Habit grid with one-tap check-ins and a progress banner that nudges you when a streak is at risk
  • Frequencies: daily, weekdays, weekends, or 1×–6× per week, plus bonus check-ins on off-schedule days
  • Stats: current and best streak, totals, completion rate, best day, and a per-habit breakdown
  • Explore: trending habits, templates, and 30-day challenges (Pro)
  • Free tier of 3 habits; Pro unlocks unlimited habits and archiving without losing history
  • Email, Google, and Apple sign-in, and full English/Korean localization

iOS app

  • Native app built with Expo and React Native, with light, dark, and system themes
  • Home-screen widget — a ring and streak, or today's list, with tap-to-check-in straight from the widget
  • Local reminders — a daily nudge at a time you pick, plus an optional evening streak-at-risk heads-up, both off by default
  • Share your progress as an image, and export every check-in as CSV (Pro)
  • Pro via Apple in-app purchase — monthly, annual with a 7-day trial, or lifetime
  • Live on the App Store; Android is in closed testing on Google Play

Web app and browser extension

  • Daily habit grid with drag-to-reorder, plus a year heatmap you can edit in place — name, emoji, color, and frequency
  • Free-tier stats cover a 4-week window
  • Installable PWA with a service worker and an offline shell
  • Web push and email reminders, timezone-aware
  • Extension turns every new tab into a check-in board, with a toolbar popup for quick toggles from any page
  • Extension is live on the Chrome Web Store, Edge Add-ons, and Firefox Add-ons, plus a direct download for Safari on Mac
  • Pro via Stripe — monthly or yearly subscription, plus one-time Lifetime and Early Supporter plans, with a billing portal

Tech stack

React 18 and Vite (with React Router v7) for the web app; Expo and React Native 0.83 with Expo Router and Zustand for iOS. Both share one Supabase backend — Postgres, auth, and edge functions — where row-level security is the authorization boundary and Pro status is only ever written server-side. The home-screen widget is a WidgetKit extension in Swift, fed by a local Expo module and authorized by a revocable widget token, so it keeps working after the app's access token expires. Payments split by platform: Stripe on the web, RevenueCat for Apple in-app purchases. Resend sends email, Web Push and VAPID drive notifications, and a shared package keeps types and translations in sync across platforms. Deployed on Vercel.