StreakFlow — Free Habit Tracker with Streaks, XP & AI Insights

The free, open-source habit tracker that actually sticks. Stacked progress rings, streaks, XP, badges, GitHub-style heatmaps, and weekly AI insights generated by Claude. No ads, no paywall.

Live: https://streakflow-app.netlify.app

Why StreakFlow

• Free forever. No paywall, no premium tier, no ads.
• Open source. MIT license. Audit it, fork it, self-host it.
• Calm gamification. Streaks, XP, badges — without the RPG cosplay.
• AI insights. Weekly patterns and predictions generated by Claude.
• PWA. Install on iOS, Android, or desktop. No app store.
• Your data is yours. Exportable. No lock-in. Row-level security.

Feature comparison

Feature	StreakFlow	Habitica	Streaks	Notion
Free forever	✅	❌	❌	✅
No ads	✅	❌	✅	✅
Open source	✅	✅	❌	❌
Streaks & freezes	✅	✅	✅	❌
GitHub-style heatmap	✅	❌	❌	❌
Weekly AI insights	✅	❌	❌	❌
PWA installable	✅	❌	❌	❌

Features

• Streak tracking — daily, weekday, weekend, custom schedules; freeze to protect a missed day
• XP & levels — Starter → Apprentice → Adept → … → Transcendent. Streak multipliers at day 7 (×1.5), 30 (×2), 100 (×3). Server-side trigger so XP can't be tampered with from the client
• 15 unlockable badges — First Step, Three-peat, Iron Week, Fortnight Fighter, Monthly Master, Century Club, Hydration Hero, and more
• Analytics — 26-week heatmap, completion %, time-of-day patterns, by-weekday breakdown
• AI insights — patterns/predictions/correlations/notes from your last 30 days, generated by Claude weekly
• Habit types — binary (yes/no), quantity (8 glasses), duration (30 min)
• Apple-Fitness-style stacked rings — one ring per habit, color-coded

Tech stack

• Next.js 16 (App Router) · React 19 · Tailwind v4 · shadcn/ui · Zustand
• Supabase (Postgres + Row-Level Security + Auth)
• Anthropic Claude API for weekly insights
• Netlify deploy via @netlify/plugin-nextjs

Quick start (self-host)

pnpm install
cp .env.example .env.local   # fill in Supabase + Anthropic keys
# Apply DB migrations in Supabase SQL editor:
#   supabase/migrations/001_initial_schema.sql
#   supabase/migrations/002_increment_xp_rpc.sql
#   supabase/migrations/003_xp_security.sql
#   supabase/seed.sql
# Disable email confirmation in Supabase Auth → Providers → Email
pnpm dev --port 3002

Architecture highlights

• XP awarded server-side via Postgres trigger on habit_logs. Client can't mint XP — the trigger reads habit type + current streak and applies multipliers atomically.
• Perfect-day bonus also server-side. Idempotent via marker rows so the bonus can't be double-claimed.
• RLS on every table. auth.uid() is the only check; no service-role key shipped to the client.
• OAuth callback validates next param against same-origin paths (no open-redirect via next=//evil.com).
• increment_xp RPC enforces caller = uid and a 1000-cap. Verified via direct anon API call.

Repository

• Code: this repo
• Issues: https://github.com/avinashchavan1/streakflow/issues
• Live demo: https://streakflow-app.netlify.app

Keywords

habit-tracker habit-tracker-app free-habit-tracker streak-app open-source-habit-tracker daily-habit-tracker gamified-habit-tracker habitica-alternative streaks-app-alternative pwa nextjs supabase anthropic-claude ai-insights tailwindcss typescript zustand

License

MIT — free for personal and commercial use.