Waterfaster
Water Fasting Timer & Phases
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
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.
Terms of Use: https://waterfaster.app/terms
Privacy Policy: https://waterfaster.app/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fixes, performance improvements, and UI enhancements.
The developer, AMIT Solutions, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Purchases
- Contact Info
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- AMIT Solutions
- Size
- 54.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
16+
- 16+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Waterfaster+ $3.99
- Waterfaster+ $44.99
- Lifetime $89.99
- Copyright
- © 2026 Waterfaster
