of your friends arefasting right now!


Track all types of intermittent fasting, from time-restricted eating to alternate-day fasting. Also log your progress with weight, waist circumference, ketones and blood glucose.

Get Friendly

You don’t have to do it alone. Create Circles of friends, co-workers or others to share your successes.


Learn about the health benefits of intermittent fasting, tips, tricks and more. Our science-backed information is reviewed at least quarterly by our team of scientists.

Feel Secure

Our technology is as secure as the software that stores your medical records.

Fasting for Life

Improve your health with Intermittent Fasting


The only app you need for fasting

Beautiful Interface
Start and stop fasts with a single tap. With our patent-pending fasting arc, see at a glance how you’re progressing with your current fast and when you’ve crossed over into the magical “keto zone”.

Fast Your Way
Supports all types of intermittent fasting. A simple tap to do 16:8, 24 hours or any other fasting window you want.

Learning Library
Delve into the science behind intermittent fasting by means of easy-to-understand videos and articles. Benefit from a stream of new information related to health and longevity.

Wearables Integration

Automatically sync with wearables and devices to track your weight, ketones and more!

Fast with Friends 
Be part of a community of people working to incorporate intermittent fasting into their daily lives. Share your results and encourage others.

Keto Zone
Visualize the point at which you’ve depleted your liver glycogen and have started to break down and burn fat to generate ketones. You can almost feel the fat melting away.

See Your Progress
Track your weight, waist circumference, ketones and blood glucose. See and feel your health improve.

Your Data is Secure
Your information is stored in a certified Precision Health Cloud on Amazon Web Services in the USA using the same security technology as medical records.


Introducing LIFE+!  Take your LIFE Fasting Tracker to the next level with features designed to enhance your consistency and affect positive change! 
  • Set up a fasting schedule from a library of popular fasting styles, or set up your own custom schedule. 
  • See how much time you have left to eat with a helpful eating window timer, and with notifications for starting and ending your fasts it takes the guesswork (or forgetfulness) out of your schedule. 
  • Enhanced fasting history monthly and yearly views
  • Track your weight loss progress using photos
  • See your tracked ketone measurements alongside the fasting arc
  • Also, get special avatar treatment and membership in an exclusive LIFE+ Subscribers Only Circle!

Learn More