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Intermittent Fasting
Zero Fasting App Review: Is It Legit?
Intermittent Fasting

Zero Fasting App Review: Is It Legit?

Keeping your weight in check is an important aspect of physical and mental health. According to the metric, Zero Fasting commands remarkable results. We explore the details to confirm whether this is true or not. Stick with us!

zero fasting app review
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If you are looking to lose weight, feel healthier, and take control of your life, there is no better way to do it than with Zero. This revolutionary new app uses intermittent fasting and tracking tools to help you achieve your goals.

With fasting apps like Zero, you will be able to monitor your fasting progress, see how much weight you have lost, and track your health stats over time. Plus, the app makes it easy to stick to your plan with handy reminders and motivational messages.

Today, we take a look into Zero’s revolutionary fasting program. Is it truly as noteworthy as the claims suggest, or is it more of an exaggerated remark? Let us find out!


Zero Fasting App
  • Fasting journal
  • Unique fasting plans
  • Eating and fasting tracker
  • Fasting guide and professional insights
Our rating:
Learn More

The Zero fasting app is a health and weight loss-themed application that enables people to checkmate their weight and improve overall health. Zero employs a combination of intermittent fasting and tracking tools to help users improve their health and monitor their progress. 

  • Easy to use coupled with a progress tracker
  • Basic app is free
  • Lots of premium content that makes for a better understanding of intermittent fasting
  • Personalized fasting plans
  • Fasting journal
  • Option to interact with a growing community
  • The pro version is quite expensive
  • A lack of depth to the questions found in the pro version
  • Lacks a search feature on the explore page

Now, let us get into the details with this Zero Fasting app review!

Comparison Table

Zero Fasting App

Intuitive calorie tracker

Supports over 20 unique diets

5,000+ recipes

Training routines

Challenge mode

Progress tracker and calendar

Expert advice and guidance

Daily motivation

Fasting journal

Unique fasting plans

Eating and fasting tracker

Fasting guide and professional insights

No free trial

No daily motivation

Zero Fasting App
Overall Rating

Intuitive calorie tracker

Supports over 20 unique diets

5,000+ recipes

Training routines

Challenge mode

Progress tracker and calendar

Expert advice and guidance

Daily motivation

Fasting journal

Unique fasting plans

Eating and fasting tracker

Fasting guide and professional insights


No free trial

No daily motivation

⭐ Rating4.0 ★★★★
✅ ProsQuick and reliable support
❌ ConsIn-app interface bugs
📌Where to buyhttps://www.zerolongevity.com/
📱 CompatibilityApple Health, Google Fit, Fitbit, Oura, Biosense
💰 Price$16.49 per month

What Is the Zero Fasting App?

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. 

Currently 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.

Zero also features a challenge mode that allows users to select from a series of challenges (these challenges are typically goal-oriented), unlock achievements, and stay motivated throughout their intermittent fasting journey.

Likewise, users can monitor their progress statistics through the inbuilt tracker and calendar. As such, they can ascertain their progress in relation to other health markers such as weight and heart rate. That way, they get to make timely adjustments to remain on track. 

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

In its premium plan, Zero also provides an exclusive, ever-growing educational library filled with video and audio segments, articles, and Q&As, geared toward turning users into fasting experts.

All-in-all, Zero is based on scientific studies geared to help you maintain a healthy weight, boost energy, reduce inflammation, and improve overall well-being, allowing you to lead a healthier and more active life.

Does Zero Fasting Work?

Based on statistical evidence, as shown by the number of people using the app, it is safe to say that Zero holds through regarding its foundational principles. 

Breaking down its features, it is well able to guide you through intermittent fasting, and you can see how far you have progressed through its built-in tracker.

Furthermore, with its collection of in-house experts (doctors and researchers alike), you have the option of having your questions answered, and Zero guarantees that the answers you receive are all scientifically proven. 

Likewise, you can also do your studies through its content library. 

Overall, Zero works and is a great addition to your journey to weight loss. However, it would be wise to say that the extent to which you benefit from the fasting plan is purely subjective. 

That is, it varies across individuals. You can give yourself the edge by following through with the ascribed plans.

How Does Zero Fasting Work?

Zero offers 5 sets of fasts upon the app’s initial setup. However, you can customize your fast in any way you want (choosing the hours and days you fast). 

Here is a rundown of how each setup works.

#1 Circadian rhythm

This fast follows your body’s biological clock. Somewhat of an overnight fast, this 13-hour fast starts at sunset and continues until sunrise.

#2 16:8 intermittent fast

The 16:8 intermittent fast is a common setup out there, also making its appearance on the Zero app. Simply put, you fast for 16 hours, and then an 8-hour eating window opens.

#3 18:6 intermittent fast

This setup is similar to the 16:8 intermittent fast. However, you fast for a longer period (18 hours) and then get a 6-hour eating window.

#4 20:4 intermittent fast

Commonly referred to as the OMAD (one meal a day) fast, Zero recommends leveling up to this point as it sparks several health benefits, including weight management, ketone production, and autophagy.

#5 36-hour fast

The 36-hour fast is the most challenging fast on the Zero app. Zero recommends doing this only once a week, as increased frequency can be detrimental to health. 

What Are the Key Features of Zero Fasting?

Having done a thorough rundown of the Zero app, it is safe to say that it came with 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

How Much Does Zero Cost?

Zero has a monthly $16.49 membership fee attached to it. However, its yearly subscription is about $144.99, roughly $9.58 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. 

What Is Zero Fasting for? 

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.

What Devices Support Zero?

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.


Here are some of the most frequently asked questions concerning Zero.

Is the Zero app worth it?

Yes, the app and its features are definitely worth the price tag. Coupled with the fact that you can easily cancel your subscription if you wish to, it is worth the hassle.

Is Zero a legit app?

Yes, the Zero app is a legit intermittent fasting app.

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 either Google Play or the App Store. But you have to pay for the services (no free app comes with this package).

How We Tested

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

Quality 7/10

There are a lot of variables that key into an app’s overall quality. As such, to fully establish our ratings, we explore every aspect of the app’s build, from a user-friendly interface to its overall functionality. 

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 7/10

The biggest question we had to ask ourselves when testing the app was if it worked well in terms of helping us achieve our goal. Are there any lapses in the features that may hinder it from fulfilling its purpose? 

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 5/10

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 these features. It is a pretty hefty price to pay, considering that there are other health apps with lesser price tags.

Brand reputation 6/10

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 RD

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.


Zero fasting is a solid fasting program 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. 

The approach, science, research, and creativity that fuel the app make it a wonderful tool to add to your inventory, especially if you struggle with weight management. 

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

The fastest track to healthy weight loss
  • Useful progress tracker and calendar
  • Calorie tracker to track daily caloric intake
  • Over 5,000 nutritious recipes
Our rating:
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Written by
Edibel Quintero is a medical doctor who graduated in 2013 from the University of Zulia and has been working in her profession since then. She specializes in obesity and nutrition, physical rehabilitation, sports massage and post-operative rehabilitation. Edibel’s goal is to help people live healthier lives by educating them about food, exercise, mental wellness and other lifestyle choices that can improve their quality of life.
Fact checked by Rosmy Barrios, MD
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