Fasting timer for 16:8, 14:10, 18:6, 20:4 and OMAD — built for shift work and rotating schedules
12 metabolic stages of a fast, backed by cited science
A gram-by-gram food plan — know exactly how much to eat in your window
Energy day-plan, sleep debt and streaks that forgive real life
Pay once · local-first · no account, no cloud, no subscription
ZenFast is a wellness and educational tool, not a medical device. Consult a
healthcare professional before starting intermittent fasting.