PerfectFast
Fasting timer and tracker
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Free
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About
PerfectFast helps you track intermittent and extended fasts with a calm, focused experience. Set up a fasting plan, follow your active fast, review your history, and see progress statistics without clutter.
The app supports common fasting schedules, custom durations, reminders, fasting stages, history views, statistics, appearance settings, local data export, and Live Activity support on compatible devices.
The Apple Watch companion lets you check your current or scheduled fast from your wrist, start or end a fast when your iPhone is nearby, and keep progress on your watch face with complications.
Your fasting data stays on your device unless you choose to export or share it.
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What's New in PerfectFast
1.4.0
July 10, 2026
Custom intermittent fasting is here: choose any daily fasting window from 12 to 23 hours, then follow the schedule that fits your rhythm. You can now adjust the target end time of an active fast without changing the plan itself, which is helpful when a day starts late or needs a little flexibility. Sharing feels better too. Completed fasts can be shared from their detail screen, share cards now offer light and dark looks, and goal status is written more clearly. This update also makes getting started simpler, lets you tap the timer to switch between elapsed and remaining time, and gives Live Activities a larger, clearer timer with the full plan name.
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