Fastio is the most complete intermittent fasting app built for real people with real goals. Whether you are looking to lose weight fast, activate fat burning, or simply build a healthier relationship with food, Fastio gives you the structure, the science, and the support to make fasting work for your life. Our fasting tracker and fasting timer in one, Fastio tracks every minute of your fast while showing you exactly what your body is doing at each stage — so you are never just watching a clock.
Fastio is designed for time restricted eating at every level. Beginners start with short, manageable fasting windows. Experienced fasters progress into deeper fat burning, autophagy fasting, and extended fasting protocols. With plans built around real metabolic science — from 16:8 fasting and 18:6 fasting to OMAD and multi-day water fasting — Fastio is the only intermittent fasting app that organizes every plan around what your body is actually doing, not just how many hours have passed.
🌅 STARTER PLANS — Build the Habit Perfect for anyone new to fasting. Short fasting windows of 8 to 11 hours help you reduce snacking, stabilize hunger, and build consistency before going deeper. Most of the fast happens during sleep — making it easy from day one.
🌿 DIGEST PLANS — Rest and Restore 12, 16, and 24-hour fasting schedules designed to give your digestive system the break it needs. Reduce bloating, stabilize blood sugar, and let your body fully recover between meals.
🔥 FAT BURN PLANS — Switch Fuels 18-hour, 24-hour, and 36-hour fasting plans that take your body into meaningful fat burning territory. This is where your fasting schedule starts producing real, visible results.
🏔 DISCIPLINE PLANS — Build Mental Strength 24, 48, and 72-hour fasts for experienced fasters who want to build discipline, sharpen focus, and push their limits with intention and preparation.
🧬 RESET PLANS — Deep Internal Reset 3, 7, 14, 21, and 40-day water fasting protocols for advanced fasters seeking deep cellular repair and full system reset. Medical supervision is strongly recommended for these plans.
⚙️ CUSTOM PLAN — Your Fast, Your Rules Create your own fasting duration and name it yourself. Full flexibility for advanced users who know exactly what they need.
✅ METABOLIC MILESTONES Fastio shows you the body phases happening inside you — hour by hour — as your fast progresses. From early fat burning to ketosis and autophagy, you always know why continuing matters.
✅ FASTING TRACKER & TIMER One tap to start. One tap to end. Your fasting timer runs in the background with smart reminders to keep you on schedule throughout the day.
✅ LEARN TAB — 40 Science-Based Articles Fastio includes a full education library covering everything from beginner fasting basics to the science of weight loss fasting, autophagy fasting, hormones, gut health, brain function, and long-term lifestyle. Real knowledge, written by health educators.
✅ BUILT FOR EVERY LEVEL Fastio is a fasting app for beginners and a serious tool for advanced fasters. Start at 8 hours. Progress to OMAD. Go deeper into extended fasting. The path is yours.
💧 Stay Hydrated While You Fast
Hydration matters more than most people realize.
• Water tracker to log your intake
• Smart reminders to keep you consistent
• Support your body while it adapts
WHY FASTIO?
Most fasting apps give you a timer and a number. Fastio gives you a complete system. You understand what is happening inside your body. You follow a fasting schedule that is designed around real biology. You progress at a pace that fits your life — not someone else's highlight reel.
Fasting is not about suffering. It is about structure, timing, and trusting the process. Fastio makes all three possible.
📲 Download Fastio today — your intermittent fasting app, fasting tracker, and body transformation guide in one place.
Fasting tracker & timer for fat burning, weight loss and autophagy benefits.