Faast
Your Intermittent Fasting Timer
Honest fasting timer. No subscription, no ads, no tricks — just track your fast and watch your progress. Built for 16:8, OMAD & custom windows.
Everything you need. Nothing you don't.
One-tap start/stop
A precise timer, accurate to the second, ready whenever you are.
Every fasting schedule
16:8, 18:6, 20:4, OMAD, or set fully custom fasting windows.
Clear visual progress
See exactly where you stand toward your fasting goal, at a glance.
Clean, minimal interface
No clutter, no distractions — just your fast.
Works fully offline
No internet connection required. The app works anywhere, anytime.
Your data, your device
No account, nothing sent anywhere. Everything stays on your iPhone.
Why Faast
Most fasting apps bury the timer behind a paywall after a free trial. Faast is different — it's a clean, focused tool built for people who just want to fast without friction or upsells.
Frequently asked questions
What is intermittent fasting?
Intermittent fasting is an eating pattern that cycles between periods of fasting and eating, such as 16:8 (16 hours fasting, 8 hours eating) or OMAD (one meal a day). Faast helps you track any fasting schedule with a simple, accurate timer.
What's the difference between 16:8, 18:6, 20:4 and OMAD?
These are common intermittent fasting schedules that differ by how many hours you fast each day: 16:8 and 18:6 are beginner-friendly, 20:4 is more advanced, and OMAD (one meal a day) is the most restrictive eating window. Faast supports all of them, plus fully custom fasting windows.
Does the fasting timer work offline?
Yes. Faast works fully offline — no internet connection is required to start, track, or complete a fast. Your fasting data stays on your iPhone.
Is Faast free, and do I need an account?
Faast has no subscription, no ads, and no account required. Open the app and start tracking your intermittent fasting immediately.