The Best Intermittent Fasting Apps

Intermittent fasting is pretty simple. You eat for a period of time and you fast for a period of time. However, if you’re trying to keep track of your eating and fasting windows in your head, you might feel overwhelmed. Luckily, there’s an app for that! In this article, we will walk through the best intermittent fasting apps and how they can make your life easier.

There are quite a few helpful intermittent fasting apps, so the new challenge will be deciding which app or combination of apps works best for you!

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This article is all about the best apps for intermittent fasting.

What Is An Intermittent Fasting App?

An intermittent fasting app is an app on your smartphone that helps you track your fasts and your eating windows. Some fasting apps also track weight, water intake and more.

The 11 Best Intermittent Fasting Apps


Window is free to download, but will prompt you to upgrade for $39.99 per year. This app allows you to track both your fasts and your eating windows. You can also track your weight, water consumption, and set up customized reminders.

If you upgrade to the premium plan, you will have access to a variety of fasting programs. If you stick with the free option, you only have the choice to track manually. Also with the premium plan comes advanced personal stats, a mood tracker, nutrition tracker, nutritionist meal tips and challenges.

Pro Tip: You don’t need to pay for this app! When it prompts you to start your free trial, just click the “x” on that screen. Then go into the app and set yourself up for manual fasting. If you don’t want to do the manual option, you will have to pay for this app. I use the manual tracking and it’s what I prefer!


  • Window: Free
  • Window Premium plan: $39.99 per year
window app


Zero is one of the most popular fasting apps. There is a free version of the app and a paid version called Zero Plus. The free version comes with a fasting timer to track your fasts, a fasting journal, your personal statistics and a learning library.

Zero Plus offers a fasting timer, allows you to track your eating window, advanced statistics, app integrations (FitBit, Apple Watch, etc.) expert fasting advice, customized fasting plans and premium content. You can also submit questions to fasting experts!


  • Zero: Free
  • Zero Plus: $69.99 per year

Femometer Intermittent Fasting

The Femometer Intermittent Fasting app allows you to track your fasting hours and other habits such as sleep, activity level, food intake and water intake. You can then track all of this insight together to understand what’s happening inside your body while you fast.

The basic Femometer account is free. You can upgrade to a premium account and pay monthly, quarterly or yearly. When you upgrade to the premium account you get access to all the features and a personalized fasting plan including a nutrition guide.


  • Femometer basic account: Free
  • Femometer Monthly: $9.99/month
  • Femometer Quarterly: $14.99/quarter
  • Femometer Yearly: $49.99/year


Fastient is an intermittent fasting app that allows you to track your daily achievements, journal symptoms, mood and weight. The premium version offers dark mode, the ability to add progress photos and quick-tag emojis.


  • Fastient: Free
  • Fastient Premium: $4.99/year or $11.99 for lifetime access
best apps intermittent fasting


The Fastic app has many features including a fasting timer, body tracker, step counter, water tracker and healthy recipes. Fastic boasts the world’s largest fasting community. You can connect with community members for accountability and to stay motivated!


  • Fastic: Free trial
  • Fastic Yearly Membership: $74.99/year
best apps intermittent fasting


The BodyFast app has a free option and a premium plan. The free option offers 10 different fasting plans, a fasting timer and notifications, weight tracking, water tracking and a knowledge library with fasting resources.

The premium plan includes everything listed above in the free plan as well as a coach subscription that provides you with an individual fasting plan, motivational daily coaching, personalized health and fitness challenges, and access to 50+ fasting plans. BodyFast claims that users that use a coach lose weight 30% faster!


  • BodyFast: Free
  • BodyFast Premium plan: $69.99/year
best apps intermittent fasting

LIFE Fasting App

The LIFE Fasting app has a built-in library full of research-based articles for fasters of all kinds. Additionally, this app allows you to track your fasts, mood and share your progress. You can easily set and adjust your fast duration to any length. You can also track your weight, waist, glucose and ketones. LIFE also has unique Fasting Circles that help you challenge, encourage and hold yourself accountable!

The LIFE+ version of the app offers all of the features listed above as well as enhanced statistics, the ability to track your weight loss with photos, and membership in an exclusive LIFE+ subscribers only circle.


  • LIFE: Free
  • LIFE+: $2.99/month
best apps intermittent fasting


The Vora app is a fasting app and social app in one place! You can track any type of fast you like with Vora. Vora tracks your fasts in easy-to-see graphics to help you track your progress. The Vora app is free, but you can choose to upgrade for $4.99.


  • Vora: Free
  • Vora Pro: $4.99
best apps intermittent fasting


The FastHabit app lets you log your fasts, track your stats and progress, sends reminders and notifications, and allows you to export your data! You can also easily sync FastHabit with your Apple Watch. The free version of FastHabit will track up to 10 days. If you would like to track beyond that, you will need to upgrade to the pro version.


  • FastHabit: Free
  • FastHabit Pro: $2.99
best apps intermittent fasting


The Simple app strives to be more than just a fasting tracker. Their mission is to provide health, weight loss and cognitive power to users. This app offers customized tips daily, fasting tracking, step-by-step guide to intermittent fasting, custom fasting protocols, meal journals and personalized insights.


  • Simple: Free
best apps intermittent fasting

Ate Food Diary

Ate Food Diary assists you in creating a visual food diary so you can keep track of how much time has lapsed between meals and snacks. This helps you look back on what you have consumed and reflect on how it made you feel. This app is a bit different than the apps with fasting timers, but it is helpful to see how much time has passed between meals/snacks.


  • Ate Food Diary: 7 day free trial

How To Use An Intermittent Fasting App For Best Results With Fasting

What gets measured, gets managed. This includes your fasts and your eating windows! One of the best things about intermittent fasting is that you do not need to track calories, macros or points. However, if you are looking to lose weight or have particular goals that you are looking to achieve with fasting – you should be tracking your fasts with a fasting app.

Tracking your fasts and eating windows can give you insight into so many things! For example, if you are a female, you may notice you are hungrier during certain weeks of the month. Tracking your fasts allows you to see this and take note so you know to fast less during certain times of your cycle. No matter your gender, tracking your fasts also keeps you accountable. Maybe you thought your eating window ended at a certain time, but you couldn’t remember. Having a fasting app allows you to check this and record your fasts/eating windows.

To use an intermittent fasting app for best results – just start.

Steps to get started with a fasting app

  1. Go to your phone, open the app store and download a fasting app (choose any of the ones listed above) that seems like a good fit.
  2. Sign up for an account with the app if necessary.
  3. Add any applicable information like height, weight, etc. This is optional, but if you want to lose weight, it can be helpful to track your weight in the same app you track your fasts.
  4. When you are done eating for the day, open the app and click “begin fast.” This wording may vary depending on the app you use.
  5. When it is time to end your fast, open the app and click the button to end your fast.
  6. You have now recorded your first fast!
  7. Continue recording your fasts even if you fast less or hardly fast at all. This data will help you in the long-term!

Frequently Asked Questions

Do you have to use an app for intermittent fasting?

You do not need to use an app for intermittent fasting. Many people find it helpful to use an app to track their fasting windows and eating windows, but you can fast without an app.

What is the best app to use for intermittent fasting?

There are many great intermittent fasting apps. Our top picks are Zero, Window and LIFE.

Bottom Line

No matter the reason you fast, tracking your fasts and eating windows can provide you with valuable insight! Hopefully this article helped you see all the amazing fasting apps that are available and helped you determine one that may work for you.

This article was all about the best apps for intermittent fasting.

Related: Intermittent fasting FAQs