A simple timer for intermittent fasting.

Each hour of a fast is a dot. Each fast you finish becomes a dot in your year.

Coming soon to the App Store

Move across the dots. Swipe fast or tap to knock the letters loose.

Start with one tap

Pick 14, 16, 18 or 20 hours, or set any goal from 12 to 72. The dots fill in as the hours pass.

One dot for each day

When a fast ends, that day gets a dot. Longer fasts make darker dots, so a year of fasting fits on one screen.

Tap any day to fix its times, or add a fast you forgot to track.

The Today screen: a timer drawn in dots, a row of hour dots and the last 6 months
TodayThe timer, the hour dots and your last 6 months.
The History screen: twelve small month calendars with a shaded dot for each day
HistoryEvery day of the year. Tap one to fix its times.
The Stats screen: the current streak, the last 26 days and averages
StatsYour streak, your average fast and your longest one. History and Stats are free.

On your Home Screen

Widgets show your timer, your streak, this week or your last 6 months. You can start a fast from the widget without opening the app.

There are Lock Screen and StandBy widgets too. Widgets come with DotFast Pro.

Free, with a Pro upgrade

Pro is a yearly or monthly subscription, or a one-time lifetime purchase. Prices are shown in the app.

Free

  • The timer, with any goal
  • Your full history and stats
  • Reminders to start, at halfway and at your goal
  • iCloud sync between your devices
  • A Control Center switch and Siri
  • CSV export

DotFast Pro

  • Home Screen widgets, with a Start fast button
  • Lock Screen and StandBy widgets
  • All 8 colors

Your fasts stay yours

DotFast has no accounts, no ads and no analytics. Your fasts are stored on your device and in your own iCloud, where the developer can't read them. The privacy policy has the details.

Questions

Which languages does it come in?

English, Spanish, German, French, Italian, Portuguese, Korean and Japanese.

What do I need?

An iPhone or iPad with iOS 26 or later.

Does it tell me how to fast?

No. DotFast tracks your fasts. It doesn't give medical advice. Talk to a doctor before fasting if you're pregnant, have a health condition or take medication.

More answers are on the support page.