Know exactly when your body switches to burning fat.
Fastual is a focused fasting timer. See your metabolic state clearly and track your progress over time.
Fastual is a focused fasting timer. See your metabolic state clearly and track your progress over time.
Available on iOS and Android. Open the app and start tracking. No setup.
Choose your eating and fasting hours. Start with 16:8 if you're new, or go straight to 20:4 if you're experienced.
Tap start when you finish eating. The timer tracks your progress and notifies you when your window opens. That's it.