Hi Product Hunt! I'm Chung, and I make small iPhone apps on my own. Most fasting apps want an account, a quiz and a trial before they show you a timer. Onefast opens on the plan picker with 16:8 already selected. Tap Start and you're done. What makes it different: • The time left is on your lock screen and in the Dynamic Island, so you never open the app just to look • It's a clock, not a counter: force-quit it, restart the phone, change time zone — it comes back showing the true elapsed time • Forgot to tap End? Fix the time afterwards, or add a fast you did last week • Three separate switches: Live Activity, lock screen widget, home screen widget • No ads, on the free tier or after you buy. No account, no analytics Built-in plans: 12:12, 14:10, 16:8, 18:6, 20:4 and one meal a day. Onefast Pro adds unlimited history, stats and charts, a weekly schedule, custom plans and two-way weight sync with Apple Health. It's a yearly plan or a one-time lifetime purchase, no trial, and the price is on screen before you tap anything. Onefast is a timer. It gives no medical or dietary advice. What's the one thing your current fasting app does that annoys you?

Onefast

A fasting timer that lives on your lock screen

A fasting timer that lives on your lock screen