Nova Fast tracks your biological fasting phases in real-time — from fat burning to autophagy. Beautiful timer, widgets, gamification, and more. Completely free.
Requires iOS 17.0 or later. No account needed.
Powerful tools to track, understand, and stay motivated throughout your fasting journey.
See your body's real-time fasting stages. Watch as you transition through 7 phases — from burning glucose to entering ketosis, activating autophagy, and triggering deep cellular repair. Understand the science behind every hour of your fast.
Start any protocol with one tap. Choose from popular plans including 16:8, 18:6, 20:4, OMAD (23:1), 14:10, and 12:12 — or create your own custom fasting schedule.
Keep your fasting progress visible with beautiful widgets. See your timer, current biological phase, and streak right from your home screen or lock screen.
Track more than just weight. Log body measurements, see your progress over time, and watch your transformation unfold with detailed charts and trends.
Stay hydrated during your fasts with built-in water tracking and customizable reminders. Proper hydration is essential for maximizing your fasting results.
Document your fasting journey. Log how you feel, what you ate, your energy levels, and any notes. Look back on your progress and find the patterns that work best for you.
Earn experience points for every fast, level up through 30 ranks, and unlock 29 achievement badges. Build streaks and turn healthy habits into a rewarding daily challenge.
See your total fasts, average duration, best streaks, and weekly trends. Track consistency with a monthly calendar view and weight trend analysis.
Available in English, French, German, Spanish, Italian, Japanese, Korean, Chinese, and 20+ more languages.
A beautiful dark interface designed for clarity and focus.
Choose a plan that fits your lifestyle, or create your own custom schedule.
As you fast, your body goes through distinct biological stages: it starts by burning glucose, then transitions to fat burning, enters ketosis, activates autophagy (cellular cleanup), increases growth hormone production, improves insulin sensitivity, and triggers immune system regeneration. Nova Fast tracks all 7 phases in real-time so you can see exactly where you are in the process.
Nova Fast includes all popular intermittent fasting protocols: 16:8, 18:6, 20:4, OMAD (23:1), 14:10, and 12:12. You can also create fully custom fasting schedules with any fasting and eating window duration.
Autophagy is your body's natural cellular cleanup process — it breaks down and recycles damaged cell components. It typically activates after 16-24 hours of fasting, depending on your metabolism and activity level. Nova Fast shows you when you enter the autophagy phase based on your fasting duration.
Every completed fast earns you experience points (XP). As you accumulate XP, you level up through 30 ranks and unlock 29 achievement badges for milestones like completing streaks, reaching fasting durations, and logging consistently. It turns building healthy fasting habits into a rewarding challenge.
Yes. Nova Fast includes home screen and lock screen widgets that show your fasting timer, current biological phase, and streak at a glance — without opening the app.
Yes. Nova Fast has built-in water tracking with customizable daily goals and reminders. Staying hydrated is crucial during fasting, and the app helps you stay on top of it.
Join thousands who track their fasts, understand their body, and build lasting healthy habits — completely free.