Fastly - Fast Timer & Tracker
Intermittent Fasting & 16:8
Free · Designed for iPad. Not verified for macOS.
Intermittent fasting, without the clutter.
Fastly is a clean, private fasting timer built for people who want to stick to 16:8, OMAD, or any plan they choose — with beautiful widgets, real-time zone tracking, and zero ads or accounts.
Start a fast in one tap. Watch your body move through five fasting zones — from catabolism to deep autophagy. Build streaks, earn badges, and see your progress in charts that actually make sense.
FASTING, YOUR WAY
• Pick from 16:8, 18:6, 20:4, OMAD, 5:2, or build a custom plan
• Live circular timer with elapsed, remaining, and target
• Edit past fasts or log a forgotten one manually
• End a fast by voice with the Siri shortcut
SEE YOUR BODY'S RESPONSE
• Five fasting zones: Anabolic, Catabolic, Fat Burning, Ketosis, Autophagy
• Clear guide explains what's happening at each stage
• Gentle notifications when you enter a new zone
STAY MOTIVATED
• Streaks and weekly summaries
• 20 unlockable badges for consistency and milestones
• Calendar heatmap shows every fast at a glance
• Full history with notes on each session
TRACK YOUR WEIGHT
• Log in kg or lbs in one tap
• Visualize trends over weeks, months, or years
• Combined timeline of fasts and weight changes
WIDGETS + LIVE ACTIVITIES
• Home Screen widgets in Small, Medium, and Lock Screen sizes
• Live Activity keeps your fast visible on the Lock Screen and Dynamic Island
• Real-time countdown and zone status — no need to open the app
YOUR DATA STAYS YOURS
• Optional iCloud sync across iPhone and iPad
• No account, no ads, no tracking
• CSV export anytime (Pro)
FASTLY PRO
Unlock the full experience:
• Unlimited history (free tier shows last 30 days)
• Widgets
• Trend, Eating Window, Fasting Pattern, and Weight charts
• 30-day and yearly insights
• CSV export of all your data
PRIVACY FIRST
Your data lives on your device (and optionally your private iCloud). We don't collect, sell, or share anything. Ever.
Ratings & Reviews
- Bug fixes and improvements
The developer, Tejas Patel, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tejas Patel
- Size
- 4.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- Copyright
- © 2026 23apps inc