Intermittent fasting timer

See exactly where you are in your fast, hour by hour.

Fasted turns your fasting window into a clear, live timeline. Watch the ring fill and see which fasting stage you have reached, from the early hours through the ones commonly associated with fat burning, ketosis and autophagy. Run 16:8, 18:6, 20:4, or OMAD, and keep the timer on your home and lock screen.

Free to download. One-time purchase unlocks Pro — no subscription, no account, no ads.

The Fasted timer screen: a teal-to-green progress ring counting 10:24:00 into a 16:8 fast, with a Fat burning stage badge, goal time and eating window.
One payment. Not per year.
0Subscriptions and renewals
5Fasting stages, live
On-deviceYour data never leaves

One tap to start. No setup quiz.

No account, no onboarding survey, no ads. Open the app, start the timer, and get on with your day.

A live progress ring

A focused timer that shows exactly how far into your fast you are, down to the second, at a glance.

Ready-made plans

16:8 is free forever. Add 18:6, 20:4, OMAD and an open-ended fast with the one-time Pro unlock.

Your fasting stage

Anabolic, blood sugar drop, fat burning, ketosis, autophagy — an estimated timeline that moves with your clock.

Home and lock screen widgets

Your live ring and current stage without opening the app. Every widget is free, with no purchase needed.

Streaks and stats

Current streak, average and longest fast, total fasts, and a weekly consistency bar.

A reminder when you're done

An optional local notification when your fast is complete. Scheduled on your device, not from a server.

The part other timers hide

Most apps count down a number. Fasted lays out the fasting stages hour by hour and marks the one your elapsed time has reached.

Anabolic

Usually still digesting your last meal.

0h

Blood sugar drops

Blood sugar and insulin typically start to settle.

3h+

Fat burning

Many people start drawing more on stored fat.

8h+

Ketosis

Ketone levels often begin to rise around here.

12h+

Autophagy

Commonly associated with cellular cleanup.

16h+

These stages are educational estimates based only on elapsed fasting time. The app does not measure your body. General wellness information, not medical advice. See the health disclaimer.

Free to start. One payment to unlock.

No subscription and no recurring charge. You buy it once, and it's yours.

Free

Free

The core timer, for good.

  • Live fasting timer and progress ring
  • The 16:8 plan, free forever
  • Every home screen and lock screen widget
  • The full stage timeline, with the hour each stage starts
  • Your last 7 days of fasts, week chart and streak
  • Dark, light and automatic themes
  • A local reminder when your fast is complete

Pro

One payment

Yours for good — not a subscription.

  • The 18:6, 20:4 and OMAD plans
  • Open fast: run with no fixed goal and stop when you decide
  • Deeper insights on the later fasting stages
  • Your complete fasting history, from your very first fast
  • Everything in Free, permanently
  • No renewal date and nothing to cancel

What other fasting apps won't tell you

Most of them pull you in with a "free" week, then bill you every year after that. Fasted doesn't work that way.

Nothing to remember to cancel

There's no countdown quietly running toward a charge you didn't plan for. The free timer is simply free.

No surprise renewal

One payment, once. Nothing renews, so nothing shows up on your card a year from now.

Nothing moves behind a new paywall

What you rely on today stays where it is. Your fasting data stays on your device, with no account and no server of ours.

Start your next fast knowing what it's doing.