Phasty: Water Fasting Tracker
Intermittent & Water Fasting
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Track your fasts with Live Activities, monitor autophagy & ketosis phases, and build lasting fasting habits. Start your first fast in under 10 seconds.
Phasty makes intermittent fasting and water fasting simple — start a fast, track your progress, and see exactly what's happening inside your body. From your first 16:8 to a full 7-day protocol, Phasty guides you with real-time metabolic tracking, personalized plans, and science-based safety monitoring.
Built on research from Buchinger Wilhelmi, Dr. Jason Fung, and Valter Longo (USC).
10-PHASE METABOLIC TRACKING
Track 10 metabolic phases — from Post-Absorptive through Deep Ketosis, Autophagy, and Immune Regeneration — with real-time hormone updates, symptom guidance, and risk monitoring.
PERSONALIZED FASTING PLANS
A 14-question health questionnaire evaluates your biometrics, activity level, and health history to recommend the safest protocol. From a 24-Hour Reset to a 7-Day Protocol.
FASTING TIMER WITH LIVE ACTIVITIES
Start any fasting schedule — 16:8, 18:6, 20:4, OMAD, or custom — and track it live on your Lock Screen and Dynamic Island.
COMPLETE DAILY TRACKING
Phase-adjusted water targets, 6 essential electrolytes with smart dosing, weight trends, and 3 daily mood check-ins.
SMART NOTIFICATIONS
Water nudges, phase-aware electrolyte alerts, and milestone celebrations as you cross into ketosis and autophagy. Only what you need, when you need it.
EVERYTHING YOU NEED
- Fasting Timer with live progress ring
- Water & Electrolyte Tracker with phase-specific dosing
- Weight Log with trend charts
- Mood Tracker — 3 daily check-ins
- Body Status — smart phase guidance
- Analytics — weekly, monthly, and yearly views
- Widgets, Dynamic Island, and Lock Screen support
SAFETY FIRST
Health questionnaire, safety warnings for risk conditions, adaptive plan limits, and refeeding guidance based on clinical guidelines.
GO PREMIUM
- Extended Plans — 72h, 5-day, and 7-day protocols
- Custom Plans — up to 3 personalized durations
- 40+ Expert Articles on fasting, nutrition, and health
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Note: If you are under 18, pregnant, breastfeeding, or have health conditions, please consult your doctor before fasting.
Premium subscriptions: Monthly / Yearly
Payment at confirmation via App Store. Auto-renews unless canceled 24h before renewal. Manage in Settings > Subscriptions.
Terms of Use: https://aiwaterfasting.app/terms
Privacy Policy: https://aiwaterfasting.app/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- better onboarding UI
- bug fixes
The developer, OANIEL HANGAN, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Purchases
- Identifiers
- Usage Data
- Diagnostics
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
- OANIEL HANGAN
- Size
- 27.3 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.4 or later.
- iPhone
Requires iOS 18.4 or later. - Mac
Requires macOS 15.4 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.4 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Weekly Subscription. $5.99
- Yearly Subscription. $49.99
- Copyright
- © OANIEL HANGAN