For iPhone, iPad, and Apple Watch

Your time.
Your pace.

A focused fasting timer. A routine that fits your life. A clear view of how it’s going.

Core fasting stays free. No ads. Works offline.

A look at TrueFast 2.0. The new design and Pro features shown here are in TestFlight. The App Store link opens the current public version.

TrueFast 2.0 timer showing fasting progress, the goal, and a clear End fast action
Native 2.0 preview. Fictional sample records.

Everyday essentials

A timer with room to breathe.

Choose a goal, start your fast, and check your progress. Edit a record when your day changes.

There when you need it.

Widgets, Live Activities, and Apple Watch keep your timer close, even when the app is closed.

Your routine, on your device.

Keep your history locally. Optional Pro sync uses your private iCloud database.

TrueFast weekly planner with recurring fasts and a one-day adjustment
2.0 planning preview
Coming in 2.0 · TrueFast Pro

Make room for real life.

Dinner runs late. Travel shifts your week. Move or skip one day’s fast without rewriting your recurring routine.

  • Save an adjustment for just that day.
  • Reminders follow the adjusted time.
  • Check for overlapping fasts before saving.

Your recurring routine stays ready for the next day.

Coming in 2.0 · TrueFast Pro

Look back.
Find your rhythm.

See how your planned start times compare with the fasts you recorded. Bring your Easy, Fine, and Hard reflections into the picture.

  • Compare planned and actual starts.
  • See dates, sample counts, and missing data.
  • Keep review calculations on your device.

A view of your recorded routine, without a score to chase.

Private routine review showing start timing, recorded reflections, sample counts and dates
2.0 routine review preview. Sample data.

The same calm,
day or night.

A clearer timer. A more useful week view. A quieter history. Light and dark appearances share the same thoughtful layout. Both are free.

A useful free app.
More room with Pro.

Start with the essentials. Choose Pro when you want more flexibility, longer trends, or records across devices.

Free core

The everyday fasting tools stay free.

  • Start, stop, and edit your fasts
  • Full fasting history, streaks, and badges
  • One active recurring schedule
  • Widgets, Live Activities, and Apple Watch
  • Light and dark appearance
  • Fasting phase education and local storage
Get TrueFast

TrueFast Pro

Optional tools for a more flexible routine.

  • New in 2.0: flexible week planning
  • New in 2.0: private routine reviews
  • Unlimited schedules and optional iCloud sync
  • Weight tracking with Apple Health
  • Advanced charts and CSV export
  • Custom accent colors

Monthly, yearly, and lifetime options. See current prices in the app for your region.

The new 2.0 features are included for existing Pro subscribers and lifetime owners.

A few useful answers.

More help is always available on our support page.

Is TrueFast 2.0 available yet?

The new design, flexible week planning, and private routine reviews shown here are currently in TestFlight. The App Store download provides the current public release.

Will the core timer stay free?

Yes. Core fasting, history, one active schedule, widgets, Live Activities, and Apple Watch remain free. Flexible week planning and routine reviews are Pro features.

Do I need an account?

No separate TrueFast account is needed. The app works locally. If you have Pro and enable sync, it uses the Apple Account already signed into iCloud on your devices.

How can I send feedback?

In 2.0, open Settings → Send feedback. Choose a topic, write your message, and review the draft in your email app. Basic diagnostics are optional and off by default. You can also email [email protected].

A little more space for your day.

Start with a timer. Build a routine that works for you.

Download on the App Store

TrueFast is a timer and record keeper, not medical advice. Fasting may not be appropriate for children, teens, pregnant or breastfeeding people, people with a history of eating disorders, or people with certain medical conditions. Ask a qualified healthcare professional if you are unsure.