JustFast - Timer
Simple fasting timer
About
This app offers a straightforward intermittent fasting timer. It focuses on tracking your fast with a clear, calm interface, providing insights into metabolic stages without gamification or pressure. It prioritizes privacy with on-device data storage and no accounts.
What's New in JustFast
1.3.0
August 25, 2026
Start again on your schedule. • Choose After each fast, Daily, or Off for start reminders. • After saving a fast, set your next reminder for 30 minutes, 1 hour, or a time you choose. • Start, postpone, or skip directly from the notification. • Enjoy clearer confirmations, polished reminder screens, and subtle accessibility-friendly animations. Reminders never start a fast automatically.
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FAQ
What is JustFast?
JustFast is a simple intermittent fasting timer designed to track your fasting periods. It focuses on providing a clear timer and insights into metabolic stages without gamification or pressure, prioritizing user privacy by keeping data on the device.
Does JustFast have ads?
No, JustFast is ad-free. The app is designed with a clean interface and no advertisements, allowing for an uninterrupted user experience.
How does JustFast track fasting progress?
JustFast uses a live timer and a glowing ring that fills towards metabolic milestones like blood sugar settling, glycogen burning, fat burning, ketosis, and autophagy. Each milestone can be tapped for a plain-language explanation.
Can I adjust my fasting start or end time in JustFast?
Yes, JustFast allows you to fix your start time by tapping the ring if you forgot to start the timer. You can also end your fast at the correct time after the fact if you forgot to stop the timer.
Is JustFast available on multiple devices?
JustFast is currently available for iPhone and iPad, offering a consistent experience across Apple devices.
How often is JustFast updated?
The latest version of JustFast is 1.3.0, and it was last updated on August 25, 2026. Updates typically focus on refining the user experience and ensuring accurate tracking.
What is the age rating for JustFast?
JustFast has an age rating of 4+, making it suitable for a wide range of users interested in intermittent fasting.
Does JustFast provide medical advice?
No, JustFast is a timer and educational companion, not a medical device. It does not provide medical advice, and users are advised to consult a healthcare professional before starting any fasting regimen.