FastOnce: Fasting Timer
Intermittent & Ramadan tracker
Lowest price: $0.99 4 months ago (-%)
Price history
About
This app helps you track intermittent fasting with a simple, visual interface. It offers customizable plans, automatic tracking, and optional gentle reminders. Specialized features are available for Ramadan, including accurate prayer time calculations.
What's New in FastOnce
2.4
October 29, 2026
- Two intro screens instead of three. FastOnce now asks about notifications when you start your first fast. - After your third fast, History shows a card with your first chart. Close it and it stays closed. - The Pro screen shows only the price the App Store gives for your country, with a Try again line if it cannot load.
MoreSubscriptions & In-App Purchases
$9.99
FastOnce Pro
Charts, trends and export of your log.
Developer apps
FAQ
What is FastOnce?
FastOnce is an intermittent fasting and Ramadan tracker designed for simplicity. It features a large, visual clock to show your fasting progress and offers customizable plans and Ramadan-specific features.
Does FastOnce have ads?
No, FastOnce does not contain advertisements. The app is free to use with optional Pro features available as a one-time purchase.
How does FastOnce calculate Ramadan prayer times?
FastOnce uses six different calculation methods (Umm al-Qura, Dubai, Egyptian General Authority, Muslim World League, Karachi, and North America) based on your location to accurately determine Suhoor and Iftar times.
Can I customize my fasting schedule in FastOnce?
Yes, FastOnce allows you to choose from popular plans like 12:12, 14:10, 16:8, 18:6, 20:4, and OMAD, or set your own custom hours and desired finish time.
What are the "stages" in FastOnce?
The stages in FastOnce explain the physiological processes that occur during fasting, such as blood sugar drop, fat burning, ketosis, and autophagy, with simple, friendly explanations.
Is FastOnce available on Android?
Based on the provided data, FastOnce is available on iPhone and iPad. Platform compatibility for Android is not specified.
What are the benefits of FastOnce Pro?
FastOnce Pro, available as a single purchase, adds charts and trends for daily hours, goal achievement, and weekly averages, as well as the ability to export your fasting log as a spreadsheet.
How often is FastOnce updated?
The latest version of FastOnce is 2.4, which was last updated on October 29, 2026. This indicates frequent updates to improve the application.
