PerfectFast

Log everything in the new Journal — fasts, water and electrolytes, weight, glucose, ketones, notes — with deeper Apple Health sync and a beautiful new fasting timer.

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.