3-Day Fast - 72h Water Fast
In-app purchases
Everyone
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10+
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About this app
The only fasting app built specifically for 72-hour water fasts.
Most fasting apps are designed for 16:8 intermittent fasting with extended fasting bolted on as an afterthought. 3-Day Fast is different — it's purpose-built for the 72-hour water fast, the protocol backed by research on autophagy, immune reset, and metabolic renewal.
REAL-TIME PHASE TRACKING
Follow your body through 8 distinct fasting phases — from post-meal to deep autophagy. Know exactly what's happening inside your body at every hour, backed by published research.
SUPPLEMENT GUIDANCE
Not sure what's safe to take during a fast? We tell you. Magnesium, electrolytes, creatine — what's fine and what breaks your fast. No more guessing.
SMART PREPARATION
Get a step-by-step prep checklist so you're set up for success before you start. Know what to eat, what to buy, and what to expect.
SAFE REFEEDING PROTOCOL
Breaking a 72-hour fast incorrectly can cause refeeding syndrome. Our guided protocol walks you through exactly what to eat in the first 24 hours after your fast.
MILESTONE CELEBRATIONS
Hit 24h, 48h, and 72h markers with visual milestones. Track your fasting journey over time and see how far you've come.
WORKS OFFLINE
The timer keeps running even without internet. Your data stays on your device.
WHO THIS APP IS FOR
• People doing their first extended water fast
• Experienced fasters who want proper phase tracking
• Biohackers interested in autophagy optimization
• Anyone following the Valter Longo or Peter Attia fasting protocols
SAFETY FIRST
Extended fasting affects blood sugar, blood pressure, and electrolyte balance. Always consult a healthcare provider before fasting, especially if you have medical conditions, take medications, or have a history of eating disorders.
Built by Mindful Apps Studio.
Most fasting apps are designed for 16:8 intermittent fasting with extended fasting bolted on as an afterthought. 3-Day Fast is different — it's purpose-built for the 72-hour water fast, the protocol backed by research on autophagy, immune reset, and metabolic renewal.
REAL-TIME PHASE TRACKING
Follow your body through 8 distinct fasting phases — from post-meal to deep autophagy. Know exactly what's happening inside your body at every hour, backed by published research.
SUPPLEMENT GUIDANCE
Not sure what's safe to take during a fast? We tell you. Magnesium, electrolytes, creatine — what's fine and what breaks your fast. No more guessing.
SMART PREPARATION
Get a step-by-step prep checklist so you're set up for success before you start. Know what to eat, what to buy, and what to expect.
SAFE REFEEDING PROTOCOL
Breaking a 72-hour fast incorrectly can cause refeeding syndrome. Our guided protocol walks you through exactly what to eat in the first 24 hours after your fast.
MILESTONE CELEBRATIONS
Hit 24h, 48h, and 72h markers with visual milestones. Track your fasting journey over time and see how far you've come.
WORKS OFFLINE
The timer keeps running even without internet. Your data stays on your device.
WHO THIS APP IS FOR
• People doing their first extended water fast
• Experienced fasters who want proper phase tracking
• Biohackers interested in autophagy optimization
• Anyone following the Valter Longo or Peter Attia fasting protocols
SAFETY FIRST
Extended fasting affects blood sugar, blood pressure, and electrolyte balance. Always consult a healthcare provider before fasting, especially if you have medical conditions, take medications, or have a history of eating disorders.
Built by Mindful Apps Studio.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Health and fitness, and App activity
Data is encrypted in transit
You can request that data be deleted
What’s new
- Clearer upgrade screen when Google Play can't be reached — with one-tap retry
- Small fixes and stability improvements
- Small fixes and stability improvements
App support
About the developer
Tomasz Mikolajewicz
morhendos@gmail.com
Calle de las Petunias 3
11316 La Linea de la Concepcion, Alcaidesa
Spain