Zero - Intermittent Fasting
com.zerofasting.zero
by Zero Longevity Science, Inc.
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About this app
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
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
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
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
App Information
Version Name
3.8.0
Version Code
70015840
File Size
17.9 MB
Minimum OS
Android 9+
Target SDK
Android 33
Developer
Zero Longevity Science, Inc.
Contact
Website
Content Rating
Mature 17+
Package Name
com.zerofasting.zeroPermissions Required
This app may request the following permissions:
Recent Reviews
Mark R. Monaco
3.0★
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.
Randell Hendricks
1.0★
So far too many glitches. App does not sync up on multiple devices. Requires forced stop to get the second device to acknowledge the first. edit 9/22/25 please please stop changing things. I had a long period of time where things worked as they were supposed to in your most recent update. just really screwed all that up. I don't know why you decided you needed the flashing times, but since that came about I can't edit the time the when the fast ended. add this thing just keeps getting worse
Sam S
1.0★
I've been using this app for about 9months and have enjoyed it very much. However the last 3-4 weeks I haven't been able to edit my fasting goal or delete inaccurate fasts. This is frustrating because it prevents my challenges from being met & having an accurate history. I purchased the annual subscription & feel like it's not worth it. I have an open ticket with support which they confirmed its a known issue & are working to fix it but we're going on 3-4 weeks without a fix.
C B
2.0★
Loved this app at first, but features began to be frozen after a month. After starting a fast, I couldn't adjust fast times and goals even after force stopping app and deleting cache. I can't delete incorrect fasts after this, too. i checked for an update, but my app is most up to date so I don't know what's wrong. Will not be reinstalling.
Oren
2.0★
Pretty buggy. It does what it needs to do, but for certain prompts, I have to click through 2-3 times for it to go through. Fitbit sync doesn't really work, and the function to add activity isn't working. There's no way the premium version is worth $10 a month; think of the value that other subscriptions offer for less. Better, free apps exist.
Rhonda
2.0★
I want to love this app. This app has everything I've ever wanted in a food diary app. But I'm having one major issue that I just cannot abide by. Logging food is abysmal! I can't take a picture in the app because it never loads. I can't type my description of the food too fast, or else the app will lag and the letters get jumbled up. The app says I've logged 10 meals, I haven't, it's just buggy as all get out 🙄. This app needs an overhaul quick, fast and in a hurry
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