ONE:Intermittent Fasting

ONE:Intermittent Fasting

Protein Tracker, Easy Fast

1 ratings
1 review
Free
In-App Purchases

Details

  • Released
  • Updated

Features

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About

This app simplifies intermittent fasting with a one-tap timer and progress tracker. It guides users through fasting stages, offers various plans, and provides insights into body changes. The focus is on building consistent habits without unnecessary complexity.

✓One-tap fasting timer
✓Live fasting stage tracking
✓Multiple fasting plan options
✓Daily streak tracking
✓Weight and water tracking
✓AI-powered progress summaries
✓Offline functionality
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What's New in ONE

1.4

September 24, 2026

NEW • Apple Watch app — your fast, the stage you're in and the time left, on your wrist. Start or end a fast without reaching for your phone. • Complications, so your fast sits on your watch face. • Home Screen widget and a Live Activity, so the timer is on your Lock Screen from the moment you start. • AI Coach — weekly and monthly written analysis of how you actually fast, what changed, and what to try next. • Protein tracker, with a daily target worked out from your weight. • Water and protein now sit on the timer itself, beside the ring. • Tap the timer's own numbers to correct a start or end time. SIMPLER • Three tabs. The app opens on the timer, and you can start a fast in under a minute. • No sign-up, no email. An account is optional, and only so your history follows you to a new phone. • Custom Timer is free again, for everyone. • Challenges have been retired. That effort went into the timer, the stages and the Coach instead. FIXED • Fasts that had vanished from your history are back, and starting a new fast can no longer close one that is still running. • Streaks are counted in your own time zone. A late-evening fast could land on the wrong day and quietly break a streak you had earned. • The app remembers the plan you chose after your first fast.

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Subscriptions & In-App Purchases

Premium Monthly

Unlock all premium features and advanced AI tools

$9.991 Month
How to cancel ONE subscription ⁉️

User reviews

Something I was looking for ! Very useful

I have been using tools to track my intermediate fasting . I saw the app on reddit and tried it . It is as good as it gets

Developer apps

FAQ

What is the short name for ONE:Intermittent Fasting?

The short common name for ONE:Intermittent Fasting is ONE. This is derived by removing the subtitle and colon from the full app name.

What fasting plans does ONE offer?

ONE offers a variety of fasting plans including 12:12, 14:10, 16:8, 18:6, 20:4, and OMAD (23:1). It also includes a Flexi mode for open-ended fasts and difficulty ratings for each plan.

Does ONE have ads?

No, ONE does not have advertisements. The app is designed to be ad-free, focusing on a clean user experience.

What features are unlocked with ONE Premium?

ONE Premium unlocks the full history, advanced trends, the AI coach for personalized insights, custom fasting plans, and cloud backup for your data.

Can I fix my fasting start or end time in ONE?

Yes, ONE allows you to fix your start or end time when life happens. This ensures your tracking remains accurate even if your schedule changes.

How often is ONE updated?

The latest version of ONE is 1.3, which was last updated on August 20, 2026. Updates typically occur to improve features and user experience.

What is the age rating for ONE?

ONE has an age rating of 17+. This is based on its content and is in line with Apple's App Store guidelines for general wellness applications.

Does ONE provide medical advice?

No, ONE is for general wellness only and does not provide medical advice. Users are advised to consult a healthcare professional before starting any fasting program.