Fast is a clean, free intermittent fasting timer that tracks where you are in your fast — in real time. Every fast moves through six metabolic phases: Digestion, Blood Sugar, Fat Burning, Ketosis, Autophagy, and Deep Fast. Fast tracks exactly which phase you're in and explains what's happening in your body at that moment. FEATURES - Real-time fasting timer with metabolic phase tracking - Six detailed fasting phases with science-backed explanations - Fasting history and weekly streaks - Insights dashboard with completion rate and duration trends - Support for 16:8, 18:6, 20:4, 24hr, and custom fasting windows - Apple Watch support - No subscription. Free forever. Built by Reach Point Lab — we make health simple.