Zero - Fasting Tracker

deepaso Ranking

Rank Class iPhone iPad
Download 1021 -
Revenue - -

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Category iPhone iPad
Free·Overall 1019 -
Free·Health & Fitness 49 -


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Developer Big Sky Health
BundleID com.courtneycircle.Radiant
Version 3.6.3
Size 109.5MB
Released December 23,2016
Updated March 5,2020
Score 4.85425
Review Num 220033
Language English
Rating 17+
Compatibility 11.0


  • Dustang84 - 2020-03-27 22:02:20

    Great Tool for losing weight

    My Son recommended the Zero app for losing weight, I didn’t think that I could fast like this. Turns out, with the help of Zero app it was much easier then expected. You learn very quickly that you were eating out of habit and far too often. This Zero app is great for retraining yourself not to slip in bad habits. I went in for a check up and my doctor ran an EKG test and told me that I had to lose weight because I actually had 2 small heart attacks. I weighed 237 lbs when I started 4 days ago. Now I am down to 231 lbs. 6 lbs in 4 days! As my Son said “you’re guaranteed to lose weight sticking to the Zero app.”

  • tristanrose6788 - 2020-03-28 00:59:01

    This app is amazing!

    This is a totally free fasting app! Not only does it have different fasting options, it also explains what each of them are and their benefits. You can even create you’re own to fit your life style. All of the other apps I’ve seen you have to pay to unlock the full version. This one is not like that at all! I am so very happy I found this app! If they would let me promote them I would love to have them as a sponsor! I stand by this app 100% way better than any other! Good job guys!

  • ?!?GrreeennJB?!? - 2020-03-27 01:13:22

    Great Idea

    One fast down. So far the app works great. Love this idea to keep people motivated towards extending their fasting periods and/or maintaining them. Is there a history of the informational videos/article? This section of the app seemed short.

Promotional Text

Track intermittent fasting, one meal a day, circadian rhythm, 16:8 and more.


Reach your health goals with the #1 fasting app.

Zero is a beautifully designed tracker used for intermittent, circadian rhythm, and custom extended fasting. As the largest app-based fasting community in the world, Zero makes it simple for you to harness the power of fasting to improve your health. 

Zero’s advisory team includes some of the world’s leading doctors and researchers, including our Chief Medical Officer Dr. Peter Attia, who guides our fasting protocols and content creation.
Zero makes fasting simple: 

• A beautiful, thoughtful design makes it simple to start fasting

• Earn badges to celebrate your fasting milestones and stay motivated

• Set a weight goal and track your progress 

• Visualize your fasting progress over time 

• Reflect on your fasting experience with the fasting journal 

• Weekly articles created by our expert content team to keep you informed and motivated 

• Stay accountable with group fasts and special events 

Quickly start your fast based on science from leading doctors and researchers. 

• 16 hour fast, known as the 16:8 Intermittent Fast, used by celebrities like Hugh Jackman and Halle Bailey when preparing for blockbuster films 

• Circadian Rhythm Fast, based on research by Dr. Satchin Panda (Salk Institute), this 13 hour fast starts at or before sunset to align your eating window with your body’s clock. Zero automatically calculates the daily sunset time based on your location

• 18 hour fast, known as the 18:6 for more advanced fasters 

• Other popular fasts include OMAD (one meal a day), 20:4 fast and custom fasting up to 7 days 

Choose your favorite fasting protocol and Zero will track your progress on your iPhone or Apple Watch with Apple Health integration to sync your weight, resting heart rate and sleep.

Join the largest fasting community in the world!