Zero: Fasting & Food Tracker

Zero: Fasting & Food Tracker

Protein & Calorie Calculator

445K ratings
1339 reviews
#94 in top-grossing Health & Fitness
🌟 Lifestyle
💪 Health & Fitness
Free
In-App Purchases

Details

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

Features

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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

This app rose +2 positions in Health & Fitness chart.

Last updated on September 1, 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

maybe dont force me to get a free trial

i dont want a free trial. just let me use the app. its stupid u have me fill out all that info just to hide everything behind a pay wall even if its a “free trial” i dont want a trial i just want the app.

Best addition to my fitness routine this year!

Happened upon Zero. Pleased by their customer service and straight forward approach to key metrics - hours / protein / water / fiber. Total game-changer.

Ugh

It doesnt even provide context like what am I doing is it nothing for 13hours am I drinking water what am I doing this is stupid. Directions please

Lacks fasting education

I’m not sure if it’s because it’s the free version but it lacks basic education on the different fast options. Free or paid this is literally the only free function and it should probably provide more information on the fast you choose.

The BEST food tracker EVER

I started using Zero on January 31, 2026, weighing 159 pounds. Within just 3 months, I was down to 129 pounds!

I’ve followed this app throughout my entire journey, and the results have been incredible. I currently weigh 119 pounds and went from a size 10 to a size 2 in less than 6 months!

Zero has helped me stay consistent, accountable, and focused on my goals. I couldn’t be happier with my results.

THANK YOU, @Zero!
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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.