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Fastum: Fasting Timer & Stages

Fastum: Fasting Timer & Stages

Extended Fasts & Autophagy

14 ratings
12 reviews
With Ads
🌟 Lifestyle
💪 Health & Fitness
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • August 5, 2026
  • September 11, 2026

Developer

Yurii Moskviak
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About

This app helps users track their intermittent fasting journey with a simple, intuitive interface. It monitors your fast, logs meals and water intake, and provides insights into your body's metabolic stages. Integrates with health platforms for a comprehensive overview.

✓One-tap fasting start
✓Timed and open fast modes
✓Metabolic stage notifications
✓Water and weight tracking
✓Meal and macro logging
✓Apple Health integration
✓Home screen widget
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What's New in Fastum

1.5.3

September 11, 2026

Fastum now speaks Ukrainian — the entire app, including every stage explanation and the whole Learn library. If your iPhone is set to Ukrainian, Fastum switches automatically. There's also a new Language row in Profile if you'd rather choose it yourself. Fixed: fasts longer than a day showed the timer as a raw hour count — a six-day fast read 160:02. It now reads 6d 16:02. Fixed: a handful of screens and alerts that were still showing English text regardless of your language.

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Subscription plans

Fastum Pro Annual

Custom Fast, Pro Fast, food log & macros

$49.991 Year
7 Days trial
How to cancel Fastum subscription ⁉️

User reviews

Most RecentHighest RatedLowest Rated

Simple and motivating fasting app

I’ve really enjoyed using Fastum! The app is clean, easy to navigate, and makes tracking my fasting window really simple. I especially like being able to see my progress throughout the fast and learn more about the different stages my body is going through. It’s motivating without feeling overwhelming, and the overall design is really nice. Definitely recommend it if you’re trying to stay consistent with intermittent fasting!
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sem171sem171

Quick and easy

Efficient and simple way to track your fasting schedule. Timer is easy to start, the history makes it obvious when I’m slipping. No account required to start, which I appreciate. Worth it.
FMSanchFMSanch

Timely and useful

Been needing this app for a while and it’s exactly what i needed for myself and partner.
Credmon2Credmon2

User-friendly Data!

This app is great, I haven’t seen any other like it for consolidating data related to fasting. The interface is really intuitive, and I love that it couples to Apple health data so I don’t have to configure a new device, it just applies the data I already have to this specific application!
Lara SkibbieLara Skibbie

Fastinating App!

Turns out fasting is way more interesting when you know the science behind it!! Love that Fastum goes beyond just a timer and actually breaks down what’s happening metabolically in your body. Go cells!
ChlochlofoshoChlochlofosho
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FAQ

Does Fastum have ads?

Yes, Fastum contains advertisements. These ads are present in the free version of the app.

How much does Fastum Pro cost?

Fastum Pro is available via subscription, costing $7.99 per month or $49.99 per year. The annual plan includes a 7-day free trial.

Can I cancel my Fastum Pro subscription?

Yes, you can cancel your Fastum Pro subscription at any time through your App Store account settings. Cancellation typically takes a couple of taps.

What devices does Fastum support?

Currently, Fastum is supported on iPhone devices. Future platform expansions may be available.

How often is Fastum updated?

The latest version of Fastum is 1.2.0, and it was last updated on August 12, 2026. Updates are released to improve functionality and add new features.

What age rating does Fastum have?

Fastum is rated for users aged 12 and older. This rating indicates the app is generally suitable for pre-teens and above.

Can Fastum track my meals and water intake?

Yes, Fastum allows you to track water intake for free with an account. Meal logging, including barcode scanning and macro tracking, is available with the Pro subscription.

How does Fastum integrate with Apple Health?

Fastum integrates with Apple Health by reading your weight, sleep, heart rate, and activity data. It also writes back the weight and water you log within the app.