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  • Fastyn: Intermittent Fasting screenshot 1
  • Fastyn: Intermittent Fasting screenshot 2
  • Fastyn: Intermittent Fasting screenshot 3
  • Fastyn: Intermittent Fasting screenshot 4

About Fastyn: Intermittent Fasting

Fastyn is the fastest and most elegant way to track your fasts. Forget complicated menus and manual setup: just choose how many hours you want to fast, tap “Start”, and let the app handle the rest. Designed with a modern glassmorphism style, smooth animations, and thoughtful personalization, Fastyn turns intermittent fasting into a clear, visual, and motivating experience you can rely on every day. What makes Fastyn different is its smart logic. The app doesn’t just start a timer, it helps you start at the right moment. Smart Start suggestions - Based on the current time and your habits, Fastyn suggests the best moment to begin your fast, such as “Tonight” or “Tomorrow morning”. - You also get clear, persuasive reasons like “Ideal for relaxing before sleep”, so it’s easier to stay consistent without overthinking. Live physiological phases - During your fast, Fastyn shows your estimated fasting stages in real time, such as fat burning, ketosis, or autophagy, directly on the home screen and widgets. - You always know where you are in your fasting journey at a glance. What you can do with Fastyn - Free duration: set any number of hours (for example, 8 h, 12 h, 20 h…) and start your fast instantly. - Live timer: track elapsed time, estimated calories burned, and fasting progress with an intuitive visual chart. - Estimated calories: see an estimate of how many calories you may have burned during your fast. - Smart cards: keep your key metrics (fasting phase, BMI, streaks, goals, and more) always visible on the main screen. - Weight log: record your measurements, explore interactive charts, and project your progress toward your goals. - Fasting calendar: review your daily and multi-day fasting history to understand your consistency over time. - Smart notifications: receive end-of-fast alerts, hydration reminders, and motivational tips to stay on track. - Customizable widgets: monitor your progress from your Home Screen without opening the app. Set your hours, tap “Start”, and experience fasting in a simple, intelligent, and visual way. Privacy Policy: https://sites.google.com/view/fastikk-privacidad/home Terms of Service: https://sites.google.com/view/fastikk-terminos

What’s new

Version 2.2.0 · Updated August 23, 2026

Bug fixes and performance improvements.

App privacy

The developer, MANUEL MATAS GALEOTE, reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Health & Fitness: Health
  • Purchases: Purchase History
  • User Content: Other User Content
  • Identifiers: User ID, Device ID
  • Usage Data: Product Interaction

Used for: Analytics, Product Personalization, App Functionality

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Health & Fitness: Fitness
  • Purchases: Purchase History

Used for: Product Personalization, App Functionality

Alternatives to Fastyn: Intermittent Fasting

Looking for apps like Fastyn: Intermittent Fasting? Here are 6 similar apps on the App Store. The highest rated is VOID - Intermittent Fasting (5.0/5), and all 6 are free to download.

Fastyn: Intermittent Fasting vs. alternatives
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