Zero: Fasting & Food Tracker

Zero: Fasting & Food Tracker

Protein & Calorie Calculator

445K ratings
1318 reviews
#100 in top-grossing Health & Fitness
🌟 Lifestyle
💪 Health & Fitness
Free
In-App Purchases

Details

  • Released
  • Updated
  • December 23, 2016
  • August 3, 2026

Features

Zero: Fasting & Food Tracker screenshot #1 for iPhone
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Zero: Fasting & Food Tracker screenshot #8 for iPhone
Zero: Fasting & Food Tracker screenshot #9 for iPhone
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About

This app tracks intermittent fasting and nutrition to help users achieve real body composition changes. It integrates fasting, protein intake, meals, hydration, and habits for a holistic approach to weight loss and metabolic health.

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
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What users say

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What's New in Zero

7.12.0

August 3, 2026

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.

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Subscription plans

Zero Plus Subscription

Access to Zero Plus features and content

$69.991 Year
7 Days trial
How to cancel Zero subscription ⁉️

Charts

Top Grossing

📈 100+4

Health & Fitness

This app rose +4 positions in Health & Fitness chart.

Last updated on August 11, 2026.

Events

Read more about Zero Days of Summer

Zero Days of Summer

7-day 16:8 to nix BBQ bloat

Jul 15, 2025 Jul 22, 2025

User reviews

G

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

Be Aware - Scam!

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.
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Not free anymore

Has a Paywall…

No button to start a fast

What happened? It used to be so easy to start my daily fast with a simple button. Then the option moved to the + menu, but after the latest update, the option to start a fast is gone. The UX has gotten worse with the updates.

Find a different app

I used zero for years on and off. Started fasting again recently and learned you can’t see ANY HISTORY AT ALL now, even your previous day’s fast, without paying for their “premium subscription.”
Why should I pay $10 monthly for a timer and my own fasting history? Zero is going downhill. Find a different app if you don’t wanna be irritated.
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Developer apps

User experience

🐞

Reported Bugs

3 issues

Password reset problems

Bug

Inaccurate fasting time tracking

Bug

Inability to exit trial without subscribing

Bug

Requested Features

6 requests

Custom fasting periods longer than 24 hours

Feature

Ability to edit fasting type and duration

Feature

Integration with more health/fitness apps

Feature

Water intake tracking

Feature

Personalized fasting recommendations

Feature

Improved data visualization and analytics

Feature

FAQ

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.