Just Fast - Fasting Timer

Just Fast - Fasting Timer

Intermittent Fasting Tracker

6 ratings
2 reviews
Free
With Ads

Details

  • Released
  • Updated
  • October 2, 2025
  • July 7, 2026

Features

Just Fast - Fasting Timer screenshot #1 for iPhone
Just Fast - Fasting Timer screenshot #2 for iPhone
Just Fast - Fasting Timer screenshot #3 for iPhone
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Just Fast - Fasting Timer screenshot #5 for iPhone
Just Fast - Fasting Timer screenshot #6 for iPhone
Just Fast - Fasting Timer screenshot #7 for iPhone
Just Fast - Fasting Timer screenshot #8 for iPhone
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About

This app tracks both your fasting periods and your eating windows, offering a unique dual-countdown feature. It visualizes metabolic phases like fat burning and ketosis, supports various fasting methods, and provides insights into your progress. It's designed to be user-friendly and privacy-conscious, working entirely offline.

Eating window countdown
Fasting phases visualization
Support for multiple fasting methods
Streak tracking with grace periods
Pattern insights
Weight and BMI tracking
Smart notifications
100% offline functionality
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What's New in Just Fast

1.17.0

July 7, 2026

What's New: • Redesigned home screen with a new fasting progress ring • Smoother animations and a cleaner, more focused layout • Track your weekly challenge progress at a glance • Performance improvements and bug fixes

More

Events

Read more about OMAD Challenge One Meal a Day

OMAD Challenge One Meal a Day

Try the advanced 23:1 fasting method for one week

Mar 31, 2026 May 1, 2026

Read more about Spring Intermittent Fast Reset

Spring Intermittent Fast Reset

14-day plan to reset your fasting routine

Mar 29, 2026 Apr 29, 2026

Read more about 7-Day Beginner Fast Challenge

7-Day Beginner Fast Challenge

Build your fasting habit — start with 12h, end 16h

Mar 27, 2026 Apr 27, 2026

User reviews

Destined to become my only fasting app

This app is fairly new, but even so has a lot of great aspects to it. I’m new the fasting, but I’ve used this to track my two fasts and found it very easy to use, I’ve even managed to get my wife to use it.
Outside of the app one thing that I thoroughly am impressed with is the response you get back from the developer. He’s still designing the app as well as adding elements that people using the app for asking for. This will very quickly become my one and only fasting app.
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Easy to use.

Really like the design of this app. It took me a couple of seconds to get used to how you set or adjust the time, but once I figured it out, I really like it! Thank you!

Developer apps

FAQ

What makes Just Fast unique compared to other fasting apps?

Just Fast is the only fasting app that tracks both your fast and your eating window with a dual countdown. It also visualizes metabolic phases like fat burning and ketosis in real time, offering deeper insights into your body's response.

Does Just Fast have ads?

Yes, Just Fast contains light banner ads on secondary screens such as the history and settings views. The main fasting timer screen is completely ad-free.

What fasting schedules does Just Fast support?

Just Fast supports all major fasting methods including 16:8, 18:6, 20:4, OMAD, 14:10, 12:12, 24-hour fasts, and custom durations. Users can choose their preferred schedule during onboarding.

Can I track my weight with Just Fast?

Yes, Just Fast includes weight tracking functionality with BMI calculation. You can log your weight entries and monitor your progress over time within the app.

Is Just Fast available in other languages?

Yes, Just Fast is available in 15 languages, including English, German, French, Spanish, Italian, Japanese, Korean, and Arabic, making it accessible to a global user base.

Does Just Fast require an account or internet connection?

No, Just Fast is 100% offline and does not require an account or signup. This ensures user privacy and allows for use without an internet connection.

How does Just Fast help beginners?

Just Fast offers beginner-friendly onboarding, allowing users to select their goal, fasting expertise, and preferred schedule in minutes. It also provides clear explanations of fasting phases without complex jargon.

What is the update frequency for Just Fast?

The app was last updated on March 27, 2026, indicating ongoing development and support. Users can expect regular updates to improve features and performance.