One-tap timer
A gorgeous animated ring fills toward your goal, with the exact time remaining.
Real body stages
Watch yourself move from fat-burning into ketosis and autophagy.
Schedules that fit
14:10, 16:8, 18:6, 20:4, OMAD and 36h — with gentle, honest streaks.
Insights & weight
See your fasting hours and weight trend over time.
Home-screen widget
Your time remaining, right on your home screen.
Private by design
Your data stays in your own iCloud and syncs across devices.