Ketl: Fasting Tracker

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.

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