For iPhone · iOS 26
Fasting,
made fluid.
A plan that fits your body and your week, a timer you can glance at, and a food scanner that runs entirely on your iPhone.
Coming soon to the App StoreEasy
Spark
Begin gently: 12:12 up to 14:10 over four weeks.
Medium
Flow
The classic rhythm: 14:10 up to 16:8.
Hard
Blaze
For experienced fasters: 16:8 up to 20:4.
Your plan, picked for you
Age, height, weight, activity and experience set the program and where your eating window falls.
Every day, your way
A 24-hour dial for each day of the week, plus rest days and templates.
Prism Lens
Point the camera at a meal, a barcode or a nutrition label, in EU or US format. Recognition runs on your iPhone.
Private by design
Everything works without an account. There are no ads and no trackers, and your data is never sold.