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About
This app helps you visualize your intermittent fasting progress with a unique visual tracker. It offers various fasting schedules, comprehensive tracking tools, and motivational milestones to keep you engaged. Designed for both beginners and experienced fasters, it focuses on privacy and a clean, intuitive interface.
✓Visual progress tracking
✓Multiple fasting schedules
✓Customizable fasting durations
✓Fasting timer with milestones
✓Journal for insights
✓Weight tracking
✓Color-coded history
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What's New in FastFlex Fasting Tracker
1.0.1
January 5, 2026
• New Achievement System - Earn 41 badges as you build your fasting streak! Bronze, Silver, Gold, and Platinum tiers based on your average fasting hours • Fasting Descriptions - Learn about each fasting method before you start • Improved Stats - Track your progress with Weekly, Monthly, and Annual statistics • Bug fixes and performance improvements
MoreSubscription plans
FastFlex Premium Annual
Annual subscription to FastFlex Premium
$9.991 Year
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FAQ
What is FastFlex?
FastFlex is a fasting tracker designed to help users visualize their intermittent fasting progress. It offers various fasting schedules, a timer, journaling, and weight tracking features to support health and weight loss goals.
What fasting schedules does FastFlex support?
FastFlex supports popular fasting schedules like 12:12, 16:8, 18:6, 20:4, and OMAD (23:1). It also allows for custom fasting durations and easy start time adjustments.
How does FastFlex help users stay motivated?
FastFlex uses motivational milestones that highlight what's happening in your body during a fast, such as fat burning and ketosis. It also celebrates goal achievements and exceeding targets.
Is FastFlex free to use?
FastFlex offers a free version with core tracking features. A premium subscription unlocks unlimited tracking, a complete journal, advanced weight tracking, and full history access.
What are the subscription costs for FastFlex Premium?
FastFlex Premium is available for $0.99 per month or $9.99 per year, providing full access to all features and future updates.
Does FastFlex have ads?
No, FastFlex does not have advertisements. The app is designed to be ad-free, focusing on a clean and distraction-free user experience.
How does FastFlex handle user privacy?
FastFlex prioritizes privacy by storing all data locally on the device, requiring no accounts, and not collecting any user data. iCloud backup is available for data synchronization across devices.
On which devices can I use FastFlex?
FastFlex is available for iPhone and iPod devices, supporting iOS. It utilizes iCloud backup for seamless data syncing across your Apple devices.