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.
