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Intermittent: Fasting Timer

Intermittent: Fasting Timer

Weight Loss Tracker, Autophagy

48 ratings
15 reviews
💪 Health & Fitness
📊 Productivity
Free

Details

Released
May 13, 2026
Updated
October 28, 2026

Features

Developer

Rohit Kumar
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Intermittent: Fasting Timer screenshot #1 for iPhone
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About

This app tracks your fasting progress by showing real-time biological phases like ketosis and autophagy. It provides science-backed explanations for each stage and supports various fasting protocols without requiring an account or subscription.

✓Real-time biological phase tracking (Fed, Lipolysis, Ketosis, Autophagy)
✓Support for multiple fasting protocols (12:12 to 72-hour fasts)
✓Free science library with cited primary sources
✓Adaptive hydration target
✓Weight and progress tracking with trend analysis
✓Private sharing circle with applause-only responses
✓Home screen widget and cross-device sync
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What's New in Intermittent

1.8.2

October 28, 2026

New: Monthly and year recaps. See how your month went, then share it. New: Set your usual start time and get a gentle reminder to begin your fast. New: Your eating window after each fast, with an optional heads-up before it closes. New: Intermittent now has its own soft chime for alerts and reminders. New: Translate Circle posts into your language with one tap. Fixed: Several crashes, and the home-screen widget stays up to date on iPhone.

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User reviews

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Beautiful, helpful, and informative

I really enjoy this app. There are so many details and information backed up by science and research. I love how you can track your weight and measurements along with your fast. I also love how you can customize your fast and update it at anytime. This app is 10x better than other apps with paywalls. I’d love an Apple Health integration so weight and other things are automatically tracked.
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JJaz113

Response from developer

Thank you so much for this wonderful feedback! ❤️ We’re glad you love the science-backed insights and flexible tracking. Apple Health integration is a great suggestion, especially for automatically syncing weight and other data, and we are working on it. We’ll keep it in mind as we continue improving Intermittent! 🙏

More people should know about this app!

This app is really great. Straight to the point, no ads or subscription. I also love how if you forget to break a fast, after some time it resets and doesn’t just keep counting for days. Love the notifications too and how it keeps track of every stage of the fasting period.
CCourtneyp2579

Response from developer

Thank you so much! ❤️ We’re glad you love the focused experience, notifications, and fasting stages. We’re especially happy that the automatic handling of forgotten fasts makes things easier. Your support means a lot to us! 🙏

Absolute goldmine

Im not the one to write a review for an app normally but Found this killer app in a random reddit search. Totally free and very minimalist UI yet very indetailed and user friendly

Only thing i suggest is to add sign up so i can use in multiple devices or just incase i broke my phone 🤓
SSiijja

I’ve hit my goal

I love this app. It’s like I’m addicted to making sure I fast within my fasting period and eating within my eating period.

Me and my spin class use this app. I have hit my goal weight and for the past 4 weeks I’ve been able to maintain
DDynah_70X7

Response from developer

This made our day! ❤️ Congratulations on hitting your goal weight and keeping it off for 4 weeks! We’re so happy the app is helping you stay consistent, and it’s awesome that your spin class is using it too. Thanks for being with us! 🙌

I LOVE THIS APP

It tells you what your body is doing during your fast whatever point of your face that you’re in. It has a note section. You can document things that you experienced or what worked for you and what didn’t so you can keep that for future reference. It also makes graphs so you can see your history very easily. And it allows you to change the time in case you forget to activate which I do want a regular basis.
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JCJo313 Cruz

Response from developer

Thank you for the wonderful review! ❤️ We're so glad you're enjoying the fasting phases, notes, history, and flexible time editing. We built Intermittent to help you understand your fast and learn from your own journey over time. Thanks for your support and happy fasting! 😊

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FAQ

What biological phases does Intermittent track?

Intermittent tracks six biological phases in real time: Fed, Early Fasting, Lipolysis, Ketosis, Autophagy, and Deep Fast. Each phase links to a free science article with primary sources cited.

What fasting protocols does Intermittent support?

Intermittent supports a wide range of fasting protocols, including 12:12, 14:10, 16:8, 18:6, 20:4, OMAD (One Meal A Day), 36 hour, 48 hour, and 72 hour fasts.

Is there a subscription required to use Intermittent?

No, there is no subscription required to use Intermittent. The app offers a free fasting science library with no paywall, and no account is needed to start tracking.

Does Intermittent have ads?

No, Intermittent is an ad-free fasting app. It does not contain any advertisements, providing an uninterrupted user experience.

How does Intermittent help with hydration?

Intermittent features a smart hydration target that is science-backed and adapts to your weight, sex, age, and fasting duration to ensure you meet your fluid intake goals.

Can I track my progress with Intermittent?

Yes, Intermittent allows you to log your weight after each fast and track trends over time. It includes features like a streak heatmap, phase reach history, and estimated fat vs. glucose energy usage.

What is the age rating for Intermittent?

Intermittent has an age rating of 17+. This is based on the content and complexity of the scientific information provided within the app.

On which devices can I use Intermittent?

Intermittent is available on iPhone, iPad, and iPod. The app supports cross-device sync privately without third-party trackers.