FatFlow

Meal Timing & Body Fat Burning

Free · Designed for iPad. Not verified for macOS.

Most people track what they eat. FatFlow helps you understand what happens after you eat and how meal timing, insulin and stored energy are connected. Most people know what they ate. Far fewer understand what may be happening in the hours afterward. After eating, insulin rises to help the body use and store incoming energy, while reducing the release of stored fat. As time passes without more food, insulin generally falls and the body gradually shifts toward using more stored energy. FatFlow makes this invisible process easier to understand. Log meals, drinks and activity in seconds. FatFlow then provides an educational estimate of whether your body is likely processing recent food, shifting fuel sources, or spending more time in a fat-burning state. Use FatFlow to: • See your current estimated metabolic state • Understand how long it may take to return to fat burning • Review daily and weekly patterns • Log meals, drinks and activity quickly • Set recurring entries and reminders • Create optional backups of your history FatFlow is designed for awareness, not judgment. It does not count calories, prescribe a diet or tell you when to eat. It helps you see how timing may shape your day so you can make more informed choices. Privacy first: • Your meal, drink and activity history stays on your device • No account is required • No ads • No subscriptions • 100% free Important: FatFlow provides educational estimates, not direct measurements. Actual responses vary based on meal size and composition, activity, metabolism, sleep, medications and health conditions. FatFlow is not a medical device and does not provide medical advice, diagnosis or treatment.

Ratings & Reviews

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Added Weekly view. Added easier access to Science & sources supporting FatFlow’s educational estimates. Added optional meal details for richer AI analysis.

Version 3.8

The developer, Ossama Eldeeb, 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 Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Location
    • Identifiers
    • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Ossama Eldeeb
Size
  • 6.7 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
9+
Copyright
  • © 2026 Ossama Eldeeb
  • Privacy Policy

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