Phasty: Water Fasting Tracker

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

— 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.

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