Fastly - Fast Timer & Tracker
Intermittent Fasting & 16:8
About
This app helps you track intermittent fasting with a clean interface, customizable plans, and motivational features. Monitor your body's response through different fasting zones and visualize progress with charts and widgets. Your data remains private, stored locally or optionally via iCloud.
What's New in Fastly
1.2
October 16, 2026
• NEW Apple Watch app with complications — start and end fasts from your wrist • Siri & Shortcuts: "Start a fast in Fastly" • Start fasts from widgets, end them from the Lock Screen • Fasting schedules with start reminders • Personal insights on your fasting patterns • Save weight to Apple Health • Fastly Pro: 14-day free trial, one yearly plan — existing users keep Pro free • Crash fix for iCloud sync users, plus accessibility improvements
MoreSubscriptions & In-App Purchases
Fastly Pro
Premium Fasting Features
Developer apps
FAQ
What fasting plans does Fastly support?
Fastly supports a variety of popular plans including 16:8, 18:6, 20:4, OMAD, and 5:2. You can also create your own custom fasting plan tailored to your needs.
How does Fastly track my body's response to fasting?
Fastly guides you through five distinct fasting zones: Anabolic, Catabolic, Fat Burning, Ketosis, and Autophagy. It provides gentle notifications as you enter each new zone, explaining what is happening.
Can I track my weight with Fastly?
Yes, Fastly allows you to log your weight in kg or lbs with a single tap. You can visualize your weight trends over weeks, months, or years and see a combined timeline of your fasts and weight changes.
Does Fastly have ads?
No, Fastly is designed to be ad-free. The app emphasizes a clean and private user experience without any advertisements.
What are the benefits of Fastly Pro?
Fastly Pro unlocks unlimited history, widgets, advanced charts for trends and patterns, 30-day and yearly insights, and CSV data export. The free tier shows the last 30 days of history.
How does Fastly handle user privacy?
Fastly prioritizes privacy by storing your data locally on your device or optionally via your private iCloud. The app does not collect, sell, or share any of your personal information.
Can I edit past fasts or log forgotten ones in Fastly?
Yes, Fastly allows you to edit past fasting sessions or manually log a fast if you forgot to start it. This ensures your tracking remains accurate.
What devices is Fastly available on?
Fastly is available on iPhone and iPad, offering optional iCloud sync to maintain your data across both devices.
