# Zero: Fasting & Food Tracker — Protein & Calorie Calculator > Intermittent fasting and nutrition tracker for body composition and metabolic health. (iPhone/iPad app by Zero Longevity Science, Inc..) - Source: https://appshunter.io/ios/app/zero-fasting-and-food-tracker/id1168348542 (this page in markdown: same URL + `.md`) - Developer: [Zero Longevity Science, Inc.](https://appshunter.io/developer/1397458636) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Rating: 4.80/5 from 445,252 App Store ratings · 1,326 written reviews indexed - Age rating: 17+ - Requires: iOS 17.0 · 238 MB - Languages: American English - Released: 2016-12-23 - Data updated: 2026-08-29 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/zero-fasting-and-food-tracker/id1168348542/reviews.md ## What is Zero? Zero is the all-in-one fasting tracker and nutrition app built for real results. Most fasting and weight loss apps stop at simply tracking fasts or calories. Zero connects the full picture — fasting, protein, meals, hydration, and habits — so you actually change your body composition, not just your eating schedule. Here’s how Zero helps you get there: • Track your intermittent fasting — Engage timers, streaks, and insights keep you stay motivated and consistent on your entire fasting journey. • Log meals the smart way — Skip the tedious manual meal entry routine. Snap a photo and get instant macros, protein composition, and clarity on how effectively your meals support your goals. • Hit your Protein Score — Track your personalized daily protein target that adapts to your weight and goals. Better protein = better satiety, better muscle retention, better weight loss. Zero makes it automatic. • Complete the equation: Fasting + Protein — Most people fast or track meals. Zero brings them together so you lose weight, protect muscle, and avoid the pressure and guilt of traditional calorie trackers. • Stay hydrated to power your fasts — Water tracking helps you maintain energy, reduce cravings, and support metabolic function throughout the day. • Build healthy habits that actually matter — Track movement, sleep, mood, and other daily pillars that reinforce your fasting and fueling routine. • Challenge yourself — Hit protein targets, maintain fasting streaks, and stay accountable with motivating challenges built around outcomes, not vanity metrics. • Learn the real science — Understand how fasting, protein, and hydration work together for sustainable weight loss and metabolic health — with insights from leading experts. • See measurable progress — Watch your streaks grow, your protein consistency rise, and your body composition improve with clean, insightful trend views. Whether you’re starting out or optimizing an existing routine, Zero gives you the structure, guidance, and clarity most apps miss. Zero is not a medical device and does not provide medical advice, diagnosis, or treatment. Always consult your doctor or qualified healthcare provider before making any changes to your diet, fasting routine, or health regimen. Zero includes a free version and an optional subscription for premium features. A free trial is available. Download Zero to get started. 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: https://www.zerolongevity.com/terms-of-use Privacy policy: https://www.zerolongevity.com/privacy-policy ## Key features - Intermittent fasting timers and streaks - Smart meal logging with photo recognition - Personalized daily protein target tracking - Integrated fasting and protein tracking - Water and habit tracking - Science-based insights on fasting and nutrition ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Zero Plus Subscription | $69.99 | per year | | Zero Plus Subscription | $89.99 | per year | | Zero Plus Subscription | $9.99 | per month | | Zero Plus Subscription | $49.99 | per year | | Zero Plus Subscription | $89.99 | per year | | Zero Plus Subscription | $69.99 | per year | | Zero Plus Subscription | $9.99 | per month | | Zero Plus Subscription | $9.99 | per month | | Zero Plus Subscription | $69.99 | per year | | Zero Plus Subscription | $69.99 | per year | | Zero Plus Subscription | $69.99 | per year | | Zero Plus Subscription | $69.99 | per year | | Zero Plus Subscription | $69.99 | per year | | Zero Plus Subscription | $39.99 | per year | | Zero Plus Subscription | $69.99 | per year | ## Chart rankings - #109 in Top Grossing · Health & Fitness (US App Store) ## What do users think of Zero? Overall sentiment: positive **Pros** - 🚀 Easy to use - 📊 Helpful tracking and data - 💡 Informative learning resources - 🔍 Detailed fasting information - 🤝 Sense of community - 🎉 Motivating badges and challenges **Cons** - 💰 Expensive premium subscription - 🔒 Forced account creation - 🙄 Intrusive ads and upsells - 🤔 Inconsistent or confusing UI changes - 🐛 Syncing and login issues - 🙅‍♀️ Lack of free features **Commonly reported bugs** - Password reset problems - Inaccurate fasting time tracking - Inability to exit trial without subscribing **Most requested features** - Custom fasting periods longer than 24 hours - Ability to edit fasting type and duration - Integration with more health/fitness apps - Water intake tracking - Personalized fasting recommendations - Improved data visualization and analytics ## Recent user reviews (10 of 1,326) All indexed reviews: https://appshunter.io/ios/app/zero-fasting-and-food-tracker/id1168348542/reviews.md ### 2/5 — Used to be so much better. *2026-08-14, version 7.12.0* This app used to be so much more user friendly. Unless they revert to an easier way to set and track your fasts I'll never go premium again. Sometimes change is just change. It doesn't make it better. ### 1/5 — You must subscribe to do anything *2026-08-13, version 7.12.0* Horrible app. Forces you to create an account and give all the personal info then won’t let you do anything without a paid subscription. ### 1/5 — надоели *2026-08-13, version 7.12.0* лишь бы бабок срубить ### 1/5 — Wanted simple app without forced option of payment *2026-08-13, version 7.12.0* Wouldn’t recommend this. The focused payment for free trial is unreasonable, no back options to close the page, closed app and opened again payment option pop up, terible app 👎👎👎👎 ### 1/5 — Failed at 1st hurdle *2026-08-13, version 7.12.0* Can’t get started as I’m In a continuous loop between bank app authorization and zero offering different trial periods….. ### 3/5 — Great app, with issues *2026-08-11, version 7.12.0* By and large a great app, but has some issues that the team needs to address (doesn’t read Apple Health data it has access to; instead forces me to do enter exercise and food intake info I’m already entering in other apps). Also needs a feature where when you break your fast, it gives you a countdown to next fast based on the previously selected fasting program (with options for how obtrusive you want the notifications). ### 1/5 — Another “free” app *2026-08-10, version 7.12.0* Stop marketing as a free app if that means a 7 day trial followed by payment that’s not free. ### 1/5 — Waste of time *2026-08-08, version 7.12.0* Waste of time ### 1/5 — G *2026-08-08, version 7.12.0* Cannot use the app unless I agree to signing up for a free 7 day trial with $149 yearly payments commencing after the trial. No thanks ### 1/5 — Be Aware - Scam! *2026-08-07, version 7.12.0* BE AWARE Zero star was not an option. I’ve used the free version of Zero since 2021 and was recently hit with a $69.99 charge for a subscription I never knowingly signed up for. Let’s be honest: this app isn’t remotely worth $69.99 to begin with, especially when there are plenty of comparable—and better—options available for free or far less. What’s even more disturbing is that I’m far from the only one reporting unexpected subscription charges. There is a clear pattern of complaints from users experiencing similar issues. Be very careful with this app and check your charges. I certainly won’t be using it again. ## Frequently asked questions about Zero ### What does the Zero app do? Zero is an all-in-one fasting tracker and nutrition app designed to help users achieve real body composition changes. It integrates intermittent fasting timers, protein tracking, meal logging, hydration, and habit tracking to provide a comprehensive approach to weight loss and metabolic health. ### What are the key features of Zero? Key features include timers and streaks for intermittent fasting, smart meal logging with photo recognition for instant macro and protein analysis, personalized daily protein target tracking, water and habit tracking, and science-based insights from experts on fasting and nutrition. ### How much does Zero cost? Zero offers a free version with an optional subscription for premium features. A free trial is available for the premium subscription. Payment for Zero Plus is charged to your iTunes Account upon subscription. ### Is Zero compatible with my device? The provided description does not specify device compatibility. However, it mentions that payment for Zero Plus will be charged to your iTunes Account, suggesting compatibility with iOS devices. Users should check the app store for specific device requirements. ### What are common use cases for Zero? Common use cases include tracking intermittent fasting periods, monitoring daily protein intake to support muscle retention and satiety, logging meals efficiently, staying hydrated, building healthy habits like sleep and mood tracking, and learning about the science behind fasting and nutrition for sustainable weight loss. ## Version history (last 5 releases) ### 7.12.0 — 2026-08-03 Your fasting companion just got even better. This update brings a completely redesigned Apple Watch experience, deeper fasting insights, and a few quality-of-life improvements throughout the app. • All-New Apple Watch App: We’ve completely redesigned the Zero Apple Watch experience with a fresh new look and expanded fasting functionality, making it easier than ever to start, end, and track your fast from your wrist. • More Detailed Fasting Insights: Explore enhanced fasting zones to better understand what your body is doing throughout every stage of your fast. • Smarter Logging: The logging sheet is now easier to navigate, helping you quickly find the actions you use most. • Bug Fixes: Improved the weight chart experience when no data is available and fixed a dark mode issue on the MVV screen. ### 7.11.0 — 2026-07-08 Discover more. Log with confidence. This update makes it easier to experience meal logging and improves the reliability of some of Zero’s most important flows. • Try Meal Logging for Free: New to meal logging? You can now try it with 3 free meal logs and experience AI-powered nutrition tracking before upgrading to Plus. • Helpful Tips Along the Way: We’ve added in-app tips to help you discover features and get the most out of Zero. • Bug Fixes: Fixed issues affecting meal uploads, onboarding, weight units, and other areas of the app for a smoother experience. ### 7.10.0 — 2026-07-06 A smoother way to log your day. This update refreshes key parts of the Zero experience, making logging and getting started even easier. • Redesigned Logging Sheet: We’ve refreshed the logging experience with a cleaner, more intuitive design for adding meals, activity, sleep, mindfulness, mood, and more. • Improved Onboarding: We’ve refined the onboarding experience with fewer taps and a more consistent interface. • Bug Fixes: Squashed bugs and made additional improvements to keep everything running smoothly. ### 7.9.1 — 2026-06-24 More tracking, fewer taps. This update makes it easier to log your progress and stay connected to your health data throughout the day. • New Navigation Experience: Logging is now accessible from anywhere in the app. Quickly add meals, track habits, and record progress with a single tap from the navigation bar. • Explore More of Zero: We’ve expanded visibility of key health metrics and tracking tools, helping you better understand what’s available to support your health journey. • Bug Fixes: Fixed an issue affecting fasting presets and improved the experience for members redeeming special offers through the App Store. ### 7.9.0 — 2026-06-17 More tracking, fewer taps. This update makes it easier to log your progress and stay connected to your health data throughout the day. • New Navigation Experience: Logging is now accessible from anywhere in the app. Quickly add meals, track habits, and record progress with a single tap from the navigation bar. • Explore More of Zero: We’ve expanded visibility of key health metrics and tracking tools, helping you better understand what’s available to support your health journey. • Bug Fixes: Fixed an issue affecting fasting presets and improved the experience for members redeeming special offers through the App Store. ## Apps similar to Zero | App | Rating | Price | Category | | --- | --- | --- | --- | | [Lose It! – Calorie Counter](https://appshunter.io/ios/app/lose-it-calorie-counter/id297368629) | 4.8 (773,665) | Free | Health & Fitness | | [MyFitnessPal: Calorie Counter](https://appshunter.io/ios/app/myfitnesspal-calorie-counter/id341232718) | 4.7 (2,352,850) | Free | Health & Fitness | | [Intermittent Fasting and Diet.](https://appshunter.io/ios/app/intermittent-fasting-and-diet/id6443584386) | 4.7 (5,279) | Free | Health & Fitness | | [Noom Weight Loss, Food Tracker](https://appshunter.io/ios/app/noom-weight-loss-food-tracker/id634598719) | 4.7 (870,850) | Free | Health & Fitness | | [Carb Manager: Keto & Macro Log](https://appshunter.io/ios/app/carb-manager-keto-and-macro-log/id410089731) | 4.8 (733,332) | Free | Health & Fitness | | [My Diet Coach - Weight Loss](https://appshunter.io/ios/app/my-diet-coach-weight-loss/id552341639) | 4.6 (24,514) | Free | Health & Fitness | ## More apps by Zero Longevity Science, Inc. - [Less - Alcohol Tracker](https://appshunter.io/ios/app/less-alcohol-tracker/id1484828892) All apps by Zero Longevity Science, Inc.: https://appshunter.io/developer/1397458636 ## Related topics [fasting diet](https://appshunter.io/ios/topics/fasting-diet) · [nzero](https://appshunter.io/ios/topics/nzero) · [zero](https://appshunter.io/ios/topics/zero) · [fasting food](https://appshunter.io/ios/topics/fasting-food) · [fast tracker food](https://appshunter.io/ios/topics/fast-tracker-food) · [fasting timer meal](https://appshunter.io/ios/topics/fasting-timer-meal) · [intermittent fasting tracker free](https://appshunter.io/ios/topics/intermittent-fasting-tracker-free) · [fasting tracker for beginners and pros](https://appshunter.io/ios/topics/fasting-tracker-for-beginners-and-pros) · [food tracker free fasting](https://appshunter.io/ios/topics/food-tracker-free-fasting) · [weight loss tracker fasting](https://appshunter.io/ios/topics/weight-loss-tracker-fasting) · [intermittent fasting widget](https://appshunter.io/ios/topics/intermittent-fasting-widget) · [weight tracker free fasting](https://appshunter.io/ios/topics/weight-tracker-free-fasting) · [free protein tracker food](https://appshunter.io/ios/topics/free-protein-tracker-food) · [free fasting app track](https://appshunter.io/ios/topics/free-fasting-app-track) · [free fasting app plan](https://appshunter.io/ios/topics/free-fasting-app-plan) · [fasting guide](https://appshunter.io/ios/topics/fasting-guide) · [psmf diet](https://appshunter.io/ios/topics/psmf-diet) · [fasting tracker women](https://appshunter.io/ios/topics/fasting-tracker-women) · [free fasting weight loss app](https://appshunter.io/ios/topics/free-fasting-weight-loss-app) · [fasting and calorie tracker](https://appshunter.io/ios/topics/fasting-and-calorie-tracker) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*