Zero - Intermittent Fasting

Burn fat and lose weight with the #1 intermittent fasting tracker.

App info

Version :

3.10.1

Category :

Health & fitness

Update :

October 28, 2025

Installs :

3,626,684

Developer :

Zero Longevity Science, Inc.

Requires Android :

Android 5.0+

Content Rating :

Mature 17+

Get it on :

Download APK

App description

Android App Analysis and Review: Zero - Intermittent Fasting, Developed by Zero Longevity Science, Inc.. Listed in Health & fitness Category. Current Version Is 3.10.1, Updated On 28/10/2025 . According to users reviews on Google Play: Zero - Intermittent Fasting. Achieved Over 4 million Installs. Zero - Intermittent Fasting Currently Has 61 thousand Reviews, Average Rating 4.0 Stars

Zero is the world's most popular intermittent fasting app.
As seen in Women’s Health, Fortune, Men’s Health, The Joe Rogan Experience and more.
Unlock the power of intermittent fasting to improve your health and lose weight without counting calories or dieting.

Reach your healthy weight goals no matter what diet you follow — from keto or low carb to paleo - and never count calories again. With Zero’s expert guidance and simple intermittent fasting tracker, you’ll unlock the full benefits of intermittent fasting to lose weight and burn fat faster.

FREE ZERO FEATURES

TIMER - Set your intermittent fasting goal, start your timer, and stay on track with reminders and insights to keep you motivated on your weight loss journey without the need to count calories.

LEARN - Fuel your intermittent fasting with our ever-growing content library.

STATISTICS - Chart your progress and map your weight loss journey. Sync with Google Fit to track health markers like weight and sleep to see how they evolve with your intermittent fasting practice.

JOURNAL - Reflect on how you feel during your intermittent fasting. We'll graph your moods so you can track trends and adjust over time.

CHALLENGES - Opt in to Challenges that align with your health goals, invite friends, unlock Achievements, and stay motivated with guidance from weight loss and fasting experts.

ZERO PLUS PREMIUM FEATURES
Unlock all of the benefits of intermittent fasting with Zero Plus to lose weight and burn fat faster.

PREMIUM CONTENT - Cut through the noise with an exclusive, ever-growing library of videos, articles, audio segments, and Q&As from intermittent fasting experts.

FASTING ZONES - Know what's happening in your body so you can stay motivated to lose weight and keep it off without dieting or counting calories.

ADVANCED STATISTICS - See how your intermittent fasting practice correlates with other health markers like weight loss. Spot trends and adjust your behavior to stay on target.

• 16-HOUR FAST, or the 16:8 intermittent fast, is used by celebrities when preparing for blockbuster films and millions of Zero users to manage weight.

• CIRCADIAN RHYTHM FAST, this 13-hour intermittent fast starts at sunset to align your eating window with your body’s clock. Zero automatically calculates the daily sunset for you.

• 18-HOUR FAST, or the 18:6 intermittent fast, is for more advanced fasters.

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

• Unlock Achievements to celebrate milestones and stay motivated.

Got questions? We have answers.

Can intermittent fasting help me lose weight?

Yes! Fasting alters how often you eat, which helps you eat less without counting calories or going on a diet. Intermittent fasting also encourages healthier, more conscientious choices around what you eat. Finally, intermittent fasting enables your body to tap into its fat stores for fuel so that you burn fat faster.

Zero Plus terms:

Payment will be charged to the credit card connected to your Google Account when you subscribe. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current period. Manage your subscription by going to your Account Settings.

Read more terms & conditions:
Terms of use: https://www.zerolongevity.com/terms-of-use
Privacy policy: https://www.zerolongevity.com/privacy-policy

We are currently offering version 3.10.1. This is our latest, most optimized version. It is suitable for many different devices. Free download directly apk from the Google Play Store or other versions we're hosting. Moreover, you can download without registration and no login required.

We have more than 2000+ available devices for Samsung, Xiaomi, Huawei, Oppo, Vivo, Motorola, LG, Google, OnePlus, Sony, Tablet ... with so many options, it’s easy for you to choose games or software that fit your device.

It can come in handy if there are any country restrictions or any restrictions from the side of your device on the Google App Store.

What's New

Thanks for using Zero!

In this release, you’ll find a number of performance improvements and fix for bug some people were experiencing when opening the app.

If you have any feedback or questions, please contact our Support team at zerolongevity.com/support

Rate and review on Google Play store

4.0

60,902 total

5 63.3

4 8.8

3 6.2

2 4.9

1 16.7

Total number of ratings

Total number of active users rated for: Zero - Intermittent Fasting

Total number of installs (*estimated)

Estimation of total number of installs on Google Play, Approximated from number of ratings and install bounds achieved on Google Play.

Recent Comments

Mark R. Monaco

I like the interface, but there's several things that seem to be broken in the Free version. For example, streaks & milestones are not being earned or incremented. Also, the week view for the Total Fasting Hours chart is not accurate. It has not shown anything since 10/28 and the hours that are displayed for that day do not even reflect what was recorded for the fast itself. -- If you don't care about any of that stuff and just want to track your fast each day, the Today & Calendar views work.

C Thompson

I regret paying for the subscription. It's ok as a free app but as a subscriber I have experienced nothing but issues. In particular, the graphs are buggy and frustrating! I want simple bar charts. Yet every time I remove the (useless) fasting line , it REAPPEARS. Also, I am supposed to be able to edit the charts - i.e. decide which data I want depicted and in which order. However, just as it's impossible to get rid of the fasting line permanently, the app keeps greying out my choices. Bad.

Juliane Böttger

Love the app overall! But since the last update or the one before something's off with the timer and notifications: Whenever I don't quite manage the full fast and stop earlier, the app also shows that the fast is over, but will still remind me later "only one hour to go!" despite the fast being over. Any suggestions? 🙂

Paulina-Alice

It is a great and simple app for any type of interval fasting. I like the reminder with mood records. This gives me the opportunity to reflect on my real mood and condition. I mostly capture a few words about it. This way I noticed for instance that my mood on the 2nd day of fasting is really great, that I am not hungry, very motivated. Which means, that the real struggle is always just the 1st day and this is all I need to overcome while fasting.

Hans Wurst

Every update breaks something else. Weight sync with Google Fit hasn't worked for months. Now I tried to log my weight in Zero, but I accidentally hit the greyed out save button which caused Zero to save a weight of 0 kg, and then sending a congratulation for reaching my weight goal. The only thing which works reliably is the timer itself. Everything else is in a very bad state. Asking 70 something for this is ridiculous. Edit: The weight log button also has ceased to work.

Jasmin O'Meara

App was amazing and I was really enjoying tacking my fasts and other info with it for over 8 weeks. Suddenly the app stopped working today. I tried restarting my phone, then if an update was needed. I finally decided to reinstall the app. I thought that since the app knew that my email address was already registered and even let me create a new password, that my data would still be there. But no! All gone! What a shame. Thank god I'd written everything down, old-school, in a book as back-up.

Damon Muldavin

A very well built app that has good features however I am looking for a tool that also gives you an option to be more open ended about your fast length, I would like the ability to start a timer once I have finished eating and then end it at the next feeding window without having to set a predefined length fast. Update 6-22-20: I have found a work around which is if (for example) I've set a 20 hour fast but I'm going to only go for 19 hours, that I'll change the fast before I end it to match. +1

Mike Abdo

Update: they fixed it! Yay! Back to 5 stars! Update: Unusable on Pixel 8 Pro, will not open. Developers advised with no response. Sorry to see that. Best fasting app I've seen. Comprehensive, actively encouraging, continuous development and refinement, no ads. Very impressed with the app's quality and user experience. Thanks, developers!