Ketl: Fasting Tracker
Track Your Fast, See the Why
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
12 hours in and your body switches fuel sources. 18 hours and your cells start cleaning house. Ketl shows every stage as it happens. This changes how you fast.
Fast smarter. Not harder.
Ketl is a fasting tracker that shows you what's actually happening inside your body — hour by hour, milestone by milestone. Not just a timer. A live journey through your own biology.
THE FASTING APP THAT GETS IT
Most fasting apps are glorified timers with a paywall. Ketl is different. A beautiful gradient wheel tracks your fast while science-backed milestones celebrate what your body is unlocking in real-time. Fat burn, ketosis, autophagy — you'll see it all happen, not just read about it.
HOW IT WORKS
Start your fast. Watch the wheel fill. As hours pass, milestones light up showing exactly what's changing inside — when you start burning fat, when ketosis kicks in, when your cells begin cleaning house. Every milestone comes with real science, not fluff. It's like a nature documentary narrating what's happening inside you.
FASTING PLANS WITH PERSONALITY
- 16:8 "The Explorer" — The perfect starting point
- 18:6 "The Pathfinder" — Push into autophagy territory
- 20:4 "The Warrior" — Deep ketosis and strong autophagy
- OMAD "The Monk" — One meal. Full focus.
- 5:2 "The Strategist" — Strategic weekly fasts
- Custom "The Architect" — Build your own from 12h to 7 days
BODY SCIENCE MILESTONES
- 4h: Blood sugar stabilizing
- 12h: Fat burn ignition — your body switches fuel sources
- 14h: Growth hormone rising — protecting muscle while burning fat
- 16h: Ketosis begins — your brain's premium fuel
- 18h: Autophagy initiating — cells taking out the trash
- 24h: Deep autophagy — major cellular renovation
- 36h: Immune system boost
- 48h: Stem cell activation
- 72h: Full system reset
Every milestone is a celebration, not a textbook.
CORE FEATURES
- Gradient Wheel Timer: Beautiful animated ring that fills as you fast
- Milestone Celebrations: Unlock body science cards at each stage
- Fasting History: Every fast logged with duration, milestones reached, and notes
- Water Tracker: Quick-add buttons, daily goal, and intake log
- Meal Tracking: Log meals with photos and notes when you break your fast
- Smart Notifications: Get notified when you hit each milestone
- Home Screen Widgets: Live fasting timer right on your home screen
- Body Science Library: Learn what happens at every stage of fasting
STATS & TRENDS
- Weekly fasting charts
- Average duration and completion rate
- Milestone hit rates across all your fasts
- Current and longest streak tracking
- Full fasting history with ratings and notes
MAKE IT YOURS
- 8 Timer Themes: Ember, Ocean, Aurora, Sunset, Midnight, Neon, Rose Gold, Monochrome
- Rate and review your fasts
- Add notes to remember how each fast felt
- Export your data as CSV
KETL PRICING
Free:
- Full fasting timer with gradient wheel
- All preset fasting plans (16:8, 18:6, 20:4, OMAD, 5:2)
- Milestones up to ketosis (16h)
- Water tracking
- Meal logging
- Fasting history and streaks
- Body science library
Pro (Monthly or Lifetime):
- Extended milestone celebrations (autophagy, stem cells, full reset)
- Custom fasting schedules (12h to 7 days)
- Detailed stats, trends, and charts
- Unlimited meal photos
- All 8 premium timer themes
- Home screen widgets
- CSV data export
Your body is already doing incredible things when you fast. Ketl just shows you.
SUBSCRIPTION INFO
Subscriptions automatically renew unless cancelled 24 hours before the current period ends. Manage subscriptions in your App Store account settings. Payment charged to Apple ID upon confirmation.
Privacy Policy: https://damobo.com/ketl/privacy.html
Terms of Service: https://damobo.com/ketl/terms.html
Support: support@damobo.com
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Christopher Mayberry, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Christopher Mayberry
- Size
- 5 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - iPad
Requires iPadOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Ketl Pro Monthly USD 3.99
- Ketl Pro Lifetime USD 22.99
- Copyright
- Copyright: © 2026 Christopher Mayberry