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Fastly – Clean Fasting Timer

Fastly – Clean Fasting Timer

Intermittent Tracker & Goals

81 ratings
29 reviews
🌟 Lifestyle
💪 Health & Fitness
Free
In-App Purchases

Details

  • Released
  • Updated
  • December 18, 2025
  • July 18, 2026

Features

Developer

Collweb LLC
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🧾$1.99 - $9.99
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About

This app provides a clean and distraction-free timer for intermittent fasting. It tracks your fasting periods in real-time, offers various popular fasting plans, and automatically monitors fasting phases like fat burning and ketosis. View your history with clear statistics and receive smart reminders.

✓Clean fasting timer with real-time tracking
✓Multiple intermittent fasting plans
✓Automatic fasting phase tracking
✓Fasting history with statistics
✓Smart reminders for goals
✓Minimalist interface
✓Dark mode support
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What's New in Fastly

1.3.18

July 18, 2026

• Added upcoming fasting phase markers to the timer ring • Improved layouts and usability on smaller devices • Enhanced Health data permission handling and sync reliability • Bug fixes and performance improvements

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In-App Purchases

$4.99

Lunch

Help keep the app simple and ad-free.

User reviews

Most RecentHighest RatedLowest Rated

Almost perfect, missing something useful.

This app is well designed and works very well for tracking fasts. It just needs the ability to track weight daily since managing weight is one reason someone may be fasting. If that was added, this app would be perfect.
ZeroDrekZeroDrek

Response from developer

Thank you for the thoughtful feedback! We’re glad you’re enjoying the app. Weight tracking is currently in development and will be included in our next update. We hope you’ll enjoy the new feature!

Great Fasting Tracker!

Works well! I actually like it better than different app I downloaded that wants me to pay a subscription fee to use a bunch of features I don’t really need. Fastly’s interface is sleek and easy to figure out. Logging fasts only takes a few seconds. This is great since I use it every day where having to click through multiple things gets old fast. I also love that they added a notes section so you can keep a diary on how each fast went. This is helpful especially for longer fasts as a newcomer; I can keep a record of where I struggle so I know to what to avoid or improve.
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captainlizzardcaptainlizzard

Response from developer

Thank you for your kind words! We’re so glad you’re enjoying Fastly’s simple design and that the Notes feature has been helpful. Thanks for your support!

Follow up to past review

Fixed to the small complaint I had about the app. Added an Apple Watch widget. Everything is perfect now thank you!
Atoche21Atoche21

Response from developer

Thank you so much for the updated review! We’re really glad the Apple Watch complication completed the experience for you. Enjoying fasting progress right from the watch face is exactly the kind of simple convenience we hoped to bring. Appreciate your support!

Great just needs Apple Watch widget

Works great, simple and informative. I just wish it had an Apple Watch widget to look down on my watch and see how much time is left till fast is over.
Atoche21Atoche21

Response from developer

Thank you for the thoughtful feedback. We’re glad you’re enjoying the app’s simplicity and usefulness. An Apple Watch complication for quickly viewing fasting progress and remaining time is a great suggestion, and it’s something we’re considering for a future update. Appreciate you taking the time to share this with us!

Missing Scheduled Reminders

It’s a decent app but missing scheduled reminders and watch complications.
jvalentine1jvalentine1

Response from developer

Thank you for the honest feedback. Scheduled reminders and Apple Watch complications are both valuable additions—we’re considering how to bring them in while keeping the experience simple and focused. Appreciate you taking the time to share this.

See 24 more reviews

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FAQ

What does Fastly do?

Fastly is a clean and focused intermittent fasting tracker. It allows you to monitor your fasts in real-time, offers various popular fasting plans, and automatically tracks different fasting phases like digestion, fat burning, ketosis, and autophagy. The app also provides clear statistics and progress insights from your fasting history.

What are the key features of Fastly?

Key features include a clean, real-time fasting timer, support for multiple intermittent fasting plans (16:8, OMAD, custom, etc.), automatic tracking of fasting phases, a complete fasting history with statistics, smart reminders for fasting goals, and a minimalist interface with dark mode support. It is designed to be lightweight and privacy-respecting.

Is Fastly free to use?

The app is free to download and use, offering a clean fasting timer experience without ads or data collection. It has in-app purchases, suggesting that some advanced features or customization options may be available for purchase.

What fasting plans does Fastly support?

Fastly supports a variety of popular intermittent fasting plans, including 14:10, 16:8, 18:6, 20:4, OMAD (One Meal A Day), and fully custom schedules. This allows users to tailor their fasting regimen to their specific needs and preferences.

Can Fastly provide medical advice?

No, Fastly is strictly for fasting tracking purposes and does not provide any medical advice. The app's description explicitly states that users should consult a healthcare professional for any medical or dietary guidance.