Waterfaster

Make water fasting feel manageable. Track 24h to 7-day fasts with live phases, hydration and weight. Backed by real fasting science.

The fasting tracker built for serious results.

From a simple 16:8 routine to a 7-day water fast — Waterfaster shows you exactly what's happening in your body and keeps you motivated through every hour.

Start a fast in one tap. Track live progress on your Lock Screen, Dynamic Island, and Apple Watch. Follow real-time body phases — fat burning, ketosis, autophagy — backed by published research.

WHY WATERFASTER

• Built for water fasting AND intermittent fasting • One tap to start, end, or schedule a fast • Live Activity and Dynamic Island progress • Apple Watch companion with quick actions • Real-time tracking of ketosis, autophagy, and deep fat burn • Apple Health sync — weight, hydration, heart rate • No ads. No noise. No distractions.

LONGER WATER FASTS

Doing a 24-hour reset, a 72-hour autophagy push, or a 5–7 day extended fast? Waterfaster keeps you safe and focused:

• Hydration reminders timed to your fast • Electrolyte guidance (the #1 cause of failed extended fasts) • Refeeding tips so you don't undo your progress • Phase-by-phase insights showing what your body is doing

INTERMITTENT FASTING

Full support for the most popular IF schedules:

• 16:8 — the most sustainable schedule • 18:6 — early autophagy activation • 20:4 — Warrior Diet • OMAD — one meal a day • Custom windows — design your own

Perfect for weight loss, metabolic health, Ramadan tracking, or simply a healthier rhythm with food.

STAY ON TRACK

• Hydration logging with daily goals • Weight tracking with trend history • Step tracking during fasts • Smart reminders that respect your sleep • Streaks that motivate — not pressure

LEARN AS YOU FAST

The Explore section gives you simple, science-based guides:

• Water fasting protocols • Electrolytes and safety • Ketosis and metabolism • Autophagy and cell renewal • Refeeding after extended fasts • Body phases hour-by-hour

Written for real life, not biochemistry class.

WATERFASTER+

Unlock body-phase tracking, premium insights, advanced protocols, and AI coaching with Waterfaster+.

• Weekly, yearly, or lifetime — your choice • Cancel anytime in your Apple ID settings • Restore purchases on any device with the same Apple ID

Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Payment is charged to your Apple ID account. Manage subscriptions anytime.

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