Burn: Fasting & BMI Tracker

Burn is a clean, private intermittent fasting tracker. Start a fast and a live flame ring fills toward your fasting goal - anywhere from 12 to 48 hours, your choice - showing your projected end time and the metabolic phase you're burning through - from fat burning to ketosis to autophagy. Keep your streak alive, watch your weekly hours add up, and chart your weight and BMI over time. Everything stays on your device.