3-Day Fast - 72h Water Fast
Autophagy Timer & Tracker
About
This app guides users through 72-hour water fasts, tracking 8 science-backed phases in real-time. It provides information on safe supplements, how to break a fast, and unlocks benefits at key milestones.
What's New in 3
1.1.1
August 17, 2026
• New: push notifications keep you posted during your fast • Journal notes save reliably again • Tips and symptom cards stay open and scroll into view • Cleaner More tab • Small fixes and improvements
MoreFAQ
What is the main purpose of 3-Day Fast?
3-Day Fast is designed to help users successfully complete 72-hour water fasts. It provides real-time tracking of fasting phases, guidance on supplements, and advice on how to break your fast safely.
Does 3-Day Fast offer a free trial?
The app is free to download and use. Pro features, which include all 8 fasting phases with detailed guidance, badges, cloud sync, and a box breathing exercise, are available as a one-time purchase, not a subscription.
What are the 'Pro Features' in 3-Day Fast?
Pro features are unlocked with a one-time purchase and include detailed guidance for all 8 fasting phases, badges and achievements, cloud sync across devices, and a box breathing exercise to manage hunger cravings.
How does 3-Day Fast track fasting phases?
The app tracks 8 distinct science-backed fasting phases in real-time, from the fed state to deep autophagy. It informs you about the specific physiological changes occurring in your body at each hour of the fast.
Can I use 3-Day Fast on my Android device?
Currently, 3-Day Fast is supported on iPhone and iPod devices. Information regarding Android compatibility is not available in the provided data.
What is the update frequency for 3-Day Fast?
The app was last updated on August 10, 2026, indicating recent development activity. The version history shows updates are released to improve functionality and add features.
Does 3-Day Fast have ads?
No, 3-Day Fast does not contain advertisements. The app offers a clean user experience without interruptions from ads.
What age rating does 3-Day Fast have?
3-Day Fast has an age rating of 12+. This suggests the content is generally suitable for users aged 12 and older.