Fasting Cycle
One circle. Always on the phase you're in.
An intermittent-fasting companion for iPhone — a single zooming circle that focuses on your current phase, with weight, water, steps, and gentle reminders built in.
Fasting phase — 16h countdown, calm and at a glance.
Eating window — the ring zooms to the phase you're in.
Full day — your whole rhythm on one circle.
Drag the ring to shape your eating window and sleep.
History — calendar with daily weight, water, and steps.
Dark mode — eating window with weight, water, and steps.
Dark mode — fasting phase, stripped to what matters.
Dark mode — settings ring with every log in place.
Dark mode — history and trends on a black canvas.
Tap to log meals and weight right from the ring.How Fasting Cycle works
One circle. Always on the phase you're in.
Your whole day is one ring: sixteen hours of fasting, an eight-hour eating window. The dial zooms to the phase you're in and counts it down, so there's no clock maths. Weight, water and steps sit right below, with gentle reminders for each.
Status
BETA OPENPlatforms
iOS · Android
Built with
SwiftUI · FastingCore · Native iOS
A closer look — every screen
Open fastingcycle.app ↗Overview
Fasting Cycle helps you run a standard intermittent-fasting protocol — default 16:8 — without thinking about clocks or math. The whole experience is anchored on one circular dial that represents your full 24-hour day, splits into fasting and eating arcs, and zooms into whichever phase you're in right now.
Below the ring: weight, water (2 L target), and steps — three calm trackers on the same surface. Gentle nudges for breakfast, lunch, dinner, weigh-in, hydration, and walks. Drag the ring in Settings to shape your eating window and sleep. Light, dark, or system appearance. Beta is open on iPhone; Android follows.
Capabilities
The zooming circle
A 24h ring that zooms to fasting, eating, or full-day — the present moment always fills the screen.
Configurable windows
Set eating start and length (12 / 8 / 6 / 4 / 0 h). Drag handles on the ring; fasting fills the rest automatically.
Weight · water · steps
Daily weigh-in, 2 L hydration with eight toggleable reminders, and step progress — all on the Today screen.
History & trends
Calendar view with per-day weight, water, and steps so you can see streaks over time.
Reminders that help
Eat-now, lunch midpoint, dinner last-call, scale, water, and walk nudges — each individually toggleable.
FastingCore engine
Pure Swift domain logic underneath — midnight-safe scheduling, OMAD mode, and weather-aware walk advice ready for the next phase.
Access
Beta is open.
Take a seat.
Fasting Cycle is accepting beta users now. Register and we'll send your access when a slot opens.