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Home arrow Nutrition arrow Intermittent Fasting arrow Zero Fasting App Review: The Unfiltered Truth

Zero Fasting App Review: The Unfiltered Truth

Written by Edna Skopljak, MD
Fact checked by Rosmy Barrios, MD
Last update: October 18, 2023
8 min read 1547 Views 0 Reviews
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The Zero fasting app promises to make intermittent fasting easier than ever, but does it really live up to its promise?

zero fasting app review

How do we vet brands and products? Learn more.

It is often challenging to navigate the vast world of health and wellness apps. Zero Fasting, however, should be familiar to those seeking a fasting app tailored to their needs.

Fasting tracking tools, the ability to overview your health stats, and a user-friendly interface have made this app a popular choice among health enthusiasts as well as celebrities.

Whether you’re an experienced practitioner of intermittent fasting or just beginning your fasting adventure, in my candid Zero Fasting app review you’ll find everything you need to know about it before you hit the “Download” button.

What Is the Zero Fasting App?

Zero logo
Our rating:
  • Fasting journal
  • Unique fasting plans
  • Eating and fasting tracker
  • Fasting guide and professional insights
Learn More
  • checkmark
    Easy to use coupled with a progress tracker
  • checkmark
    Basic app is free
  • checkmark
    Lots of premium content that makes for a better understanding of intermittent fasting
  • checkmark
    Personalized fasting plans
  • checkmark
    Fasting journal
  • checkmark
    Option to interact with a growing community
  • checkmark
    The pro version is quite expensive
  • checkmark
    A lack of depth to the questions found in the pro version
  • checkmark
    Lacks a search feature on the explore page

Zero, aptly named after the amount of food consumed during the fasting period, is a fast-growing intermittent fasting program geared toward weight management and body transformation. 

At the time of writing this review ranked as the number one fasting tracker on Google Play, the Zero app, in its true sense, is a simple diet app executed well, giving you all the tools to succeed in intermittent fasting. 

Developed by some world-leading health researchers and doctors on Zero’s advisory team, the app offers a wide range of features, including custom presets and fasting plans, a fasting journal, and a unique fasting timer.

You can also integrate it with your smart tools like the Apple watch, making it one of the most flexible intermittent fasting apps

⭐ Rating


✅ Supported fasting types

16:8, Circadian rythm, 18:6, OMAD, 20:4 fast, and custom fasts lasting up to 7 days

❌ Downsides

In-app interface bugs

📌Where to download it

Get it here

📱 Compatibility

Apple Health, Google Fit, Fitbit, Oura, Biosense

💰 Price

$9.99 per month

Does Zero Fasting Work?

I began my exploration of Zero Fasting with a healthy dose of skepticism. It’s no secret that there are countless wellness apps available out there, and they can often sound too good to be true. So, does this app really provide the results you are looking for?

Based on statistical evidence, as shown by the number of people using the app, it is safe to say that Zero is one of the most popular fasting apps available. Released in 2016, it has been downloaded more than 3 million times.

However, Zero Fasting is not a one-size-fits-all solution. Be realistic about your expectations when trying it out. I firmly believe that when fasting plans are adhered to, and consistency is maintained, this app can be game-changing—various trackers, a simple interface, and the ability to get personalized plans can keep you on the right track.

What Are the Key Features of Zero Fasting?

Having done a thorough rundown of the Zero app, I’ve noticed that there are some pretty exciting features from both the free version and the Zero Plus premium version.

Zero free version

The free version of the app comes with the basic features, including:

  • Timer
  • Educational content
  • Challenges
  • Progress tracker
  • Journal

Zero Plus premium version

Zero Plus comes with all the features present in the free version. However, Zero takes things a step further as they have provided an inventory of unique features.

  • Ask Zero
  • Custom fasting plans
  • Custom presets
  • Premium content
  • Advanced progress tracker
  • Advanced journal

What Is Zero Fasting For? 

For those who want to give intermittent fasting a try and learn more about the science behind it, Zero fasting is a great way to start.

It can get quite confusing figuring out a health app’s true purpose, especially when they come stacked with multiple features. However, Zero has kept things simple with its intermittent fasting app, making it a great app amongst its peers.

Zero is primarily a fasting and health tracker that helps users with weight management, inflammation reduction, and energy enhancement. 

Coupled with an existing exercise routine, you gain the ability to transform your health and physique in record time.

Benefits of Zero Fasting App

The Zero Fasting App provides a number of benefits, including weight management and enhancing metabolism, as well as facilitating a sense of community and simplifying fasting schedules.

After gathering lots of information, I’ve compiled the main benefits of this app. Let’s take a closer look.

#1 Makes the fasting journey easier

The Zero Fasting app provides users with a comprehensive guide to intermittent fasting, allowing users to plan their meals and track their progress easily.

The app also allows users to customize their fasting window, choosing between 12-hour, 16-hour, 18-hour, and 20-hour fasting intervals. This will enable users to tailor their fasting experience to their individual needs and goals.

#2 Helps maintain healthy eating habits

Zero Fasting also provides users with various tools designed to help them stay on track with their fasting and eating habits.

The app includes reminders and food logs to ensure users stay on top of their nutrition. Users can also track their food intake and view correlations between metrics they’ve logged in their fasting tracker.

#3 Might improve the quality of sleep

The Zero Fasting app allows users to track their sleep patterns and receive personalized advice on improving their sleep. The app also provides users with various sleep-related tips, such as avoiding caffeine late at night and reducing screen time before bed.

Zero Fasting App Downsides

Every tool or application has both strengths and limitations, so it’s important to understand them both. While Zero Fasting is a great tool for helping users stay on track with their intermittent fasting goals, there are a few downsides to consider.

#1 Limited access to recipes

Zero Fasting App’s limited recipe selection is among its notable shortcomings. Fasting schedules and tracking are the app’s primary focus, however, it may not satisfy users who desire detailed meal planning and a more holistic approach to overall well-being.

While the app does offer users a meal planner, it does not provide access to a library of recipes. This means users will need to come up with their own meal ideas or use recipes from other sources.

#2 App is not free

There is a free and a premium version of the Zero Fasting App; therefore, access to the full scope of its features is not free. Individuals who are budget-conscious may have to factor in the subscription fee when considering the app as part of their wellness routine.

#3 Limited customization options

While the app allows users to customize their fasting window, other aspects of their fasting regimen cannot be customized. For example, users cannot adjust their macronutrient intake or set specific fasting goals

How Much Does Zero Fasting Cost?

At the time of writing this review the premium version of Zero has a monthly $9.99 membership fee attached to it. However, its yearly subscription is $69.99, roughly $5.80 monthly, cheaper than the former.

Zero offers all users a 7-day free trial, which grants them access to all Zero features. So, you get to experience the real deal before switching to the paid membership. 

While the price is pretty hefty, at least compared to other apps of such pedigree, the quality and features Zero offers certainly justify the price tag. 

Similar Apps

Comparison Winner: DoFasting

Access to over 200 meal plans

Daily motivation boosts

Tips and guidance

Provides daily motivational boosts


Has a weight tracker

Weekly chalenges

Easily integrates with other fitness tools

More than 10 fasting plans to choose from

Easy to use


Offers more than 100 tasty recipes


No free trial

Lots of upsells

Basic options are restricted to what you can do

Limited amount of fasting plans

Free app contains ads

Lack of flexibility in changing your weekly fasting schedule

How I Evaluated the Zero Fasting App

The key factors I considered in my Zero fasting app review revolved around quality, effectiveness, price, and brand reputation. Let’s take a closer look at each of them.

Quality 4/5

Safe to say that all the penned-down attributes listed by Zero were present in the app. However, like many similar applications, it had its fair share of baggage and rough edges that Zero needs to improve on.

Effectiveness 4/5

The biggest question I had to ask myself when testing the app was if it worked well in terms of helping users achieve their goals.

Well, the app certainly held its own, and numerous testimonies affirm its effectiveness as a weight loss tool.

However, one thing that stood out was the lack of a filter/search on the explore page. As such, you cannot find the exact content that will satisfy your needs. You have to scroll until you find what you need manually, which can be quite exhaustive.

Price 4/5

While Zero offers users a free 7-day trial version, which grants you access to all features, you need to get the pro version to continue using additional features. It is a pretty hefty price to pay, considering that there are other health apps with lesser price tags.

Brand reputation 4/5

When it comes to the fitness world, Zero has certainly established itself as an authority amongst its peers. With apps like this coming with yearly subscriptions, users must get a sense of belonging before committing to such a relationship. Zero exceeds in this field.

A Word From Our MD

Expert image border HR_author_photo_Rosmy
Rosmy Barrios
Medical advisor for Health Reporter

Zero Fasting is a fantastic app that helps people understand the intricacies of intermittent fasting while providing them with a customizable program that will suit their needs.

However, like other similar fasting apps, it is not a quick fix, especially if your goal is to lose a significant amount of weight. You need to be consistent with your fast while taking exercising seriously.

On that note, if you are interested in trying zero fasting, it is important to talk to your doctor first. This diet is not for everyone, and it is important to make sure that it is safe for you before you start.

Once you have gotten the green light from your doctor, give it a try! You may be surprised at how easy it is – and how good you feel – after just one day without food.


Where can I get the Zero app?

The app is available for download on all Android and iOS devices. On Android, it is available on Google Play, while iOS users can find it on the App Store.

Is Zero a legit app?

Yes, the Zero app is a legit intermittent fasting app. It has received positive reviews and feedback from users who have found it helpful in integrating fasting into their daily routines.

How to cancel a Zero subscription?

You can cancel your subscription by navigating the Google Play or App Store until you get to the subscription tab. Once there, click on the Zero Fasting app and cancel your subscription.

Is the Zero Fasting app free?

You can download the app for free on Google Play or the App Store. Fasting tracker and other basic functions are free but you have to get a premium version to use all the features.

Conclusion: Is Zero App Worth It?

Zero Fasting is a solid fasting app tailored to anybody wishing to try their hands at intermittent fasting. Regarding the health app, you get a fair enough bargain for its features, so there is no question about giving it a try.  

Regardless, owning health apps does not guarantee success. You have to put in the work! And by that, I mean following the instructions throughout the entirety of your fast.

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Written by Edna Skopljak, MD
Fact checked by Rosmy Barrios, MD
Last update: October 18, 2023
8 min read 1547 Views 0 Reviews
0 Reviews

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