Fast!

Fast! makes intermittent fasting simple and social. Start a timer, watch your body move through each fasting phase — from blood-sugar stabilizing to fat-burning, ketosis, and autophagy — and log how you feel along the way.

• Clean, real-time fasting timer with science-backed milestone markers • Track your history, streaks, and progress over time • Connect 1-to-1 with a friend or create a group to fast together and see each other's live progress • Send quick encouragement to keep each other on track • Private by design — your data is yours

Whether you do 16:8, 18:6, OMAD, or your own schedule, Fast! helps you stay consistent.

FAST! PREMIUM

Fast! Premium is an auto-renewing subscription that unlocks unlimited fasting hours, milestones, the journal and friends. The free tier allows 10 hours of fasting and always stays free.

Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription in your Apple Account settings after purchase.

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