Zero Longevity Science, Inc.
3.8 
Category: Health
Price: free
Age Rating: 17+
Rating: 3.8
Available on: /
Updated on: May 11, 2026
Join a vibrant community of fellow fasters within the Zero app for support and motivation. Share experiences, tips, and encouragement with others who are on similar journeys, fostering a sense of camaraderie that can make your fasting experience more enjoyable and effective.
Zero offers a variety of customizable fasting plans to suit your lifestyle and goals. Whether you’re new to intermittent fasting or a seasoned pro, you can tailor your fasting schedule to fit your everyday routine, making it easier to stick with your journey towards better health.
Zero provides a wealth of insightful articles and resources on intermittent fasting and nutrition. These curated pieces help educate users about the science behind fasting, offer tips for success, and inspire you to make informed decisions about your health and wellness journey.
Keep a close eye on your fasting progress with Zero's intuitive tracking features. You can easily log your fasting hours, monitor your streaks, and celebrate milestones, helping you stay motivated and accountable as you work towards achieving your health objectives.
Promotes weight loss by enhancing fat-burning during fasting periods Improves insulin sensitivity, aiding better blood sugar control Boosts mental clarity and focus, enhancing cognitive function Supports cellular repair processes, promoting overall health Simplifies meal planning by reducing the number of meals needed daily 
May lead to nutritional deficiencies if not carefully planned Can cause increased hunger and cravings Social situations may become challenging due to strict eating windows The Zero app provides a comprehensive solution for individuals looking to incorporate intermittent fasting into their daily routines. Whether you are a beginner exploring the benefits of fasting or a seasoned practitioner seeking enhanced features, Zero caters to various scenarios. Users can select from multiple fasting plans, including 16:8, 18:6, or even longer fasts like 24 hours. This flexibility allows users to tailor their fasting schedules according to personal goals, such as weight loss, improved metabolic health, or increased mental clarity. The app is particularly beneficial for those with busy lifestyles, as it helps streamline meal planning and encourages mindfulness around eating habits. Additionally, the integration of features such as a fasting timer and food tracking makes it easier for users to stay committed to their fasting schedules.
The user interface of the Zero app is sleek and intuitive, making it accessible for users of all ages. Upon launching the app, users are greeted with a clean dashboard that displays their current fasting status and progress. The app offers insightful statistics that track fasting durations, weight changes, and overall health metrics, providing motivation to stay on track. Community features allow users to connect with others on similar fasting journeys, fostering a sense of accountability and support. Many users appreciate the daily motivational articles and tips provided within the app, which enhance their fasting experience and knowledge. However, some users have reported occasional glitches or slow loading times, which can disrupt the otherwise smooth experience.
Zero operates on a freemium model, allowing users to access basic fasting features at no cost. For those seeking advanced functionalities, such as personalized coaching, additional fasting plans, and in-depth analytics, a premium subscription is available. The subscription fee is competitively priced, making it accessible for most users interested in maximizing their fasting experience. The app also offers a free trial for premium features, allowing users to evaluate the benefits before committing to a subscription. This approach ensures that users can find a plan that fits their budget and lifestyle while still reaping the benefits of intermittent fasting.
Zero consistently releases updates that enhance user experience, fix bugs, and introduce new features based on user feedback. The development team is proactive in addressing any technical issues, ensuring that the app remains functional and user-friendly. Customer support is readily available through in-app assistance and email, providing timely responses to user inquiries. This commitment to user satisfaction is evident in the app’s regular updates and the incorporation of user suggestions, which demonstrates the developers’ dedication to creating a robust fasting tool. Overall, the combination of effective support and consistent updates solidifies Zero’s reputation as a leading app in the intermittent fasting space.
Security & Privacy Review
I've been using this app for years and at first it was perfect. But now it barely lets you start or stop your fast and if you want to check how long you have or anything you have to open and close the app several times just to see unless you use the widget. Hopefully I can save my data and find a new app.
I used this app for a few years. It was snappy, clean, did what it needed. But over the last few months it has just become unusable. Starting / stopping fasts only works about half the time. It's slow and buggy, no matter my internet connection or when I rebooted. Avoid, there are other alternatives that actually work.
I used to really like the app, but it has become slow and glitchy recently. Often it would take up to a minute to load the app. Starting and stopping a fast was glitchy. I would click start or stop and nothing would happen. After a few tries it would finally register. At the moment it's no longer loading the main fast window. I've been trying to stop my fast for 10 minutes. closing/reopening the app, and other things, but it just won't open. Think I have to uninstall and find a new app.
Why does using the app require an internet connection? I just want to end my fast so I can eat but I've had to close the app multiple times to be able to load so I can end a fast, absolutely bad UX. If you really want my data then at just have it sync next time its able to, don't prevent me from ending my fast. Edit: I have gotten to the point of giving up on this app as the issue above continues and am now trying alternatives, I found one called Fast Times, that is free and works offline.
I've used this app for YEARS, but it's busted after the last update. I've dealt with some of the weirdness with the timers being off if you don't use the app for a while, that's fine. but now I can't even open the damn thing. I can KINDA use it with the widget, as in I can stop and start it from said widget, but I can't correct times or change it from my previous setting. the app just straight up doesn't open now. no number of resetting or uninstalling and reinstalling helps. PLEASE FIX THIS! 😭
Review Source: Google Play store public user reviews.
Yes, users can submit suggestions or feedback through the app's support section, providing an opportunity for users to contribute to its development.
Zero - Intermittent Fasting may collect certain personal data to enhance user experience, but it prioritizes user privacy and provides options for data management.
Yes, Zero - Intermittent Fasting supports offline use, allowing users to track their fasting even without an internet connection.
Users can cancel their subscription through the app settings or the app store where they purchased it, following the specific instructions for subscription management.
The subscription cost for Zero - Intermittent Fasting varies based on the plan chosen, typically offering monthly and yearly options, with discounts for longer commitments.
Yes, you can access customer support directly through the Zero app by navigating to the help section.
Customer numbers are unique and cannot be changed. If you have issues, please contact customer service for further assistance.
You can reach customer service through the support section of the app or by emailing support
Log in to your account settings and update your email address there. If you face issues, contact customer service for assistance.
Check your spam folder for the activation email. If it’s not there, you can request a new activation link through the app or contact customer service.
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/contact
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