Zero: Fasting & Health Tracker

Zero: Fasting & Health Tracker

By Big Sky Health

  • Category: Health & Fitness
  • Release Date: 2016-12-23
  • Current Version: 4.20.0
  • Adult Rating: 17+
  • File Size: 281.02 MB
  • Developer: Big Sky Health
  • Compatibility: iOS 13.0+
Score: 4.85
From 345,461 Ratings


Unlock the power of intermittent fasting to lose weight and improve your metabolic health. Zero’s expert guidance, goal-based fasting plans, personalized insights, and advanced tracking can help you manage your weight, boost energy, reduce inflammation and live a longer, healthier life. Rooted in scientific research and backed by Zero’s Chief Medical Officer Dr. Peter Attia, use Zero to reach healthy weight loss goals and enjoy your favorite foods no matter what diet you follow - keto, low-carb, medetertanian, vegan, vegetarian, paleo, macros, intuitive eating or calorie counting. Featured in Women’s Health, The Tim Ferriss Show and more, Zero is the world’s most popular fasting app. Get started for free today. FAST TRACK YOUR GOALS TIMER - Set goals, track your fasts, and stay on track with Siri support and iOS 14 widgets. CUSTOM PLANS - Personalized protocols and adaptive recommendations help everyone from first-time fasters to advanced practitioners. SUSTAINABLE APPROACH - Adjust how long and how often you fast and enjoy your meals when you’re not fasting. MONITOR PROGRESS PERSONALIZED INSIGHTS - See how your fasting practice correlates with health markers like weight, heart rate, sleep, and blood glucose. Spot trends and adjust behaviors to stay on target. FASTING ZONES - Understand what's happening in your body to stay motivated to reach your goals. JOURNAL - Reflect on how you feel during your fasts. We'll graph your moods so you can track trends over time. GET GUIDANCE FROM EXPERTS PREMIUM CONTENT - Cut through the noise with an exclusive, ever-growing library of hundreds of videos, articles, audio segments, and Q&As from health experts like Dr. Peter Attia and Kanchan Koya PhD. HOLISTIC APPROACH - Learn about multiple facets of health, including metabolic health, mindful eating, gut health, inflammation, blood sugar, hormone health, hunger management, sleep health, exercise, and more. ASK ZERO - Submit your questions and tune in to get answers from experts. STAY ACCOUNTABLE AND GET SUPPORT CHALLENGES - Fasting is more fun with friends. Join seasonal events and group fasts that align with your goals. Stay motivated with guidance from experts and a chance to win exclusive prizes. ACHIEVEMENTS - Unlock achievements to celebrate fasting milestones and stay motivated. APPROACHABLE FASTING PLANS FOR EVERY BODY • 13-HOUR FAST, based on research by Dr. Satchin Panda (Salk Institute), this 13-hour or “Circadian Rhythm Fast” aligns your eating window with your body’s clock. • 16-HOUR FAST, or the 16:8 Intermittent Fast, used by celebrities, athletes, and millions of Zero users to manage weight. • 18-HOUR FAST, or 18:6 for more advanced fasters. • Other popular fasts include OMAD (one meal a day), 20:4 fast and custom prolonged fasts up to 7 days Track your progress on your iPhone or Apple Watch with Apple Health integration to sync your weight, resting heart rate and sleep. Download the Zero app to get started for free, or unlock premium features with Zero Plus. Payment for Zero Plus will be charged to your iTunes 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: Privacy policy:


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Heavy in promoting keto

Not everyone who does intermittent fasting follows the ketogenic lifestyle. Most of the articles focus on keto, which is annoying and unhelpful when you subscribe to a different style of eating.
By ee2739569


I love this app helps me keep a healthy daily diet
By Palogita

Was good until recent update

Until 2 days ago this was a good app to keep track of your fasting hours, but since two days ago I can no longer start my timer, when I go to press “Start 16h timer” it brings me to “change fast goal” and options to change my current fasting tracker, and no matter what I do I can’t ever get it to let me start my timer. Very frustrating.
By Zoe Marley

Too many bugs

I can’t even open my profile page without getting the spinning wheel of death. Please fix quality of the app
By qeop345

Really liking what I see

Still learning this app and still learning how to fast but really like the way the app adjusts my fasting stages as I add my biometrics. Very nice!! Would like to be able to have a journal during my eating window like I have when I’m fasting so I can keep track of how I’m feeling 30 min to an hour after I eat.
By dawson_mama

Smooth & Professional

Expert guidance and narrow directions. Easily managed details for a fast of any kind
By Jo Marcelo


This app is okay to get you started in a practice of IF. But it’s not of much help beyond that as it doesn’t provide any meaningful feedback. It’s a timer and that’s about it.
By tphigginsesq

Works great

Last year I used this everyday and did 16:8 and lost about 30 pounds (175 to 145) but I gained back 15 cause I stopped 😭but I’m going to start again
By yoongiyonngsjaha

Zero Intermittent Fasting

I think I must not be aware of what the Zero app’s possibilities are. It isn’t exactly what I hoped for. So much says I need to order Zero Plus and I can’t afford it. So I am a bit disappointed.
By Espie!


I am so happy for two days now , it seems like a dream come true that I can fast for 26 hours. Now I know that with this my problem will be solved.
By mamaify

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