FastJoy: Fasting Tracker

FastJoy is the simple, private way to track intermittent fasting. Pick a protocol, start the timer, and watch your fasting and eating windows in real time — no account, no paywall on the core timer, and everything stays on your device.

WHY FASTWINDOW
- Beautiful animated fasting timer with live elapsed time and progress ring
- Choose 16:8, 18:6, 20:4, OMAD or a custom fasting window
- Informational fasting stages as the hours add up (fat burning, ketosis, autophagy zone)
- Current streak, today's eating window and target end time at a glance
- Edit your start time anytime — perfect when you forget to hit start

TRACK EVERYTHING
- Full history of every fast with met-goal status
- GitHub-style consistency heatmap of your fasting days
- Weekly fasting hours and calendar overview

STATS & PROGRESS
- Average fast length, longest fast, completion rate and streaks
- Fast-duration trend chart and this-week-vs-last comparison
- Patterns by weekday and start time of day
- Optional weight log with a clean trend chart
- Dozens of achievements to keep you motivated

REMINDERS THAT HELP
- Get notified the moment your fasting goal is reached
- Optional "time to start fasting" and hydration reminders
- 100% local notifications — no servers, no tracking of your habits

PRIVATE BY DESIGN
- No sign-up, works fully offline
- Optional Face ID / Touch ID lock
- Export and import your data as JSON anytime
- Available in English, Spanish, French, Italian, German and Portuguese

FastJoy is a tracking aid only and does not provide medical or nutritional advice. Intermittent fasting is not suitable for everyone, including during pregnancy or with certain medical conditions. Consult a qualified healthcare professional before changing your eating patterns.

Start your first fast today and build a routine that lasts.