Intermittent fasting, without the guesswork. Abstia is a privacy-focused intermittent fasting tracker that shows you what your fast is actually doing — featuring a one-tap timer, real-time metabolic stage tracking, and an AI coach that learns from your history.

No ads. No paywalls. Works fully offline.

WHY ABSTIA IS DIFFERENT
Most fasting apps just count down a clock. Abstia shows you what’s happening inside your body, helping you understand each phase of your fast from fat-burning to autophagy.

🔥 REAL-TIME METABOLIC STAGE TRACKING
• Visual metabolic ring guides you through each stage: fed state, post-absorptive, fat-burning, ketosis, and deep ketosis.
• Know exactly when you enter ketosis and when autophagy begins.
• Gain actionable insights into your body's physiology.

⏱️ FASTING TIMER & CUSTOM SCHEDULES
• Start any fast in a single tap.
• Choose popular protocols: 16:8, 18:6, 20:4, OMAD, ADF, or custom windows.
• Flexible timer editing lets you adjust start and end times anytime.

🤖 PERSONALIZED FASTING COACH
• Learns from your streaks, energy levels, and consistency to give custom advice.
• Celebrates your milestones and helps you get back on track when you stumble.

📊 BIOFEEDBACK & HEALTH LOGGING
• Track mood, hunger types, and energy levels after each fast.
• Uncover patterns: find out which fasting window yields your peak focus and energy.
• Sync seamlessly with Health Connect to pull in weight, calories, and macros automatically.
• View your estimated TDEE and calorie balance without manual logging.

📅 HISTORY, HEATMAP & STREAKS
• Visualize your journey with a calendar heatmap.
• Track your longest fast, current streaks, and monthly consistency.

⌚ WIDGETS & WEAR OS
• Track your fast directly from home-screen and lock-screen widgets.
• Stay updated on your current metabolic stage via the Wear OS companion app.

🔒 OFFLINE-FIRST & 100% PRIVATE
• Track fasts anywhere, even without internet access.
• No account required to start.
• Your data remains yours: zero ads, zero data selling, and no third-party tracking.

If generic fasting apps have let you down with paywalls or intrusive ads, give Abstia a try today!