8 Best Intermittent Fasting Apps That You Must Try in 2021

Being a professional dietitian or fitness & wellness startup, if you are planning to enter the fasting apps world, but not sure whether to move ahead with the idea or not. This blog is for you.

Herein, being an app development firm, we have curated a list of 8 best intermittent fasting apps that you must try in 2021. So, let’s have a look at the top intermittent fasting apps.


Intermittent fasting is blowing up online after a new study found that people on a diet had a lowered risk of heart disease and a significant metabolism boost.

With the trending alternate day fasting, 16:8, 5:2, eat-stop-eat, the IF diet has boosted health solutions. Being a diet specialist, you can engage more health-conscious people trying to lose weight through your app development.

If you are thinking of developing a fasting app, then this is the right time. You can develop your own fasting app with unique features, functionalities, and interesting ideas to get your start your intermittent fasting journey.

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Best Intermittent Fasting Apps

Here is the list of best free weight tracking apps and to make it easy for you, we have prepared this table based on their features, price, and platform availability.

However, all the apps are free to use, but you may need to pay for the subscriptions, in-app purchases, advanced features, and consultations.

LogoAppTop FeaturesPriceDownload
Transporter App
  • Easy to customize your own fast
  • Track your fasting progress and fasting goals
  • Journal entry attached to the completion of each fast
  • Integrate with smart wearables like Apple Watch and know your weight, resting heart rate and sleep
FreeApp store Play store
Transporter App
  • Adjust the time as per convenience
  • Log weight, waist circumference, glucose, and ketones
  • In-app community to connect
  • Research-based articles and videos
FreeApp store Play store
Transporter App
  • Fasting timer leading through the weeks
  • Personal fasting coach
  • Weight tracker and statistics
  • Notification alerts and no advertisement
FreeApp store Play store
Transporter App
  • Keeping track of meals via photos
  • Track fasting automatically
  • Share progress on different social platforms
  • Stay accountable via friends or coach
FreeApp store Play store
Transporter App
  • Track daily fast and diet plan
  • See others’ accomplishments or ask questions
  • Graphical representation of past fasts
  • Export data and facts to CSV
FreeApp store Play store
Transporter App
  • Visualize progress while fasting
  • Make your journal about the fasting experience and progress
  • Check the fasting history through interactive graphs
  • Import previous fasts from other tracking apps via .csv file
  • Dark mode, progress pictures, quick-tag emojis features
FreeApp store Play store
Transporter App
  • Stop, restart, or adjust the fast at any time
  • Visualize the progress in percentage
  • Keep a record of your weight log
  • Set reminders for fasting and get notified
FreeApp store Play store
Transporter App
  • Easy for manual setup
  • Great tool for monitor weight
  • Check the progress in a timeline
FreeApp store Play store

Now let’s discuss all these apps in detail to know more about them and find the reason why these apps are the best.

  1. Zero

    Zero apps have over 1 million downloads and over 10 million complete fasts to date. It is a simple intermittent fasting tracker that helps users sync an intermittent fast with their biological clock. The app for fasting fetches the user’s location and figures out when the sun will set in their area.

    For example, if the sun sets at 6:30 PM, then you can start fasting hours at 8:30 PM, and in between the Zero app will count these 2 hours of nighttime eating. This data will store on your phone and you can export it anytime for your personal analysis.

    This free app is available to download for iOS and Android.

    best intermittent fasting app for 2020

    Image Credit: Zero

  2. LIFE Fasting Tracker

    From the many best fasting apps, the LIFE Fasting Tracker app is a scheduling tracker, since life fasting app allows users to set their own start and end time & goal for the fasting periods.

    The benefit of life fasting app is in-app learning libraries with research-based articles and tips for beginner and experienced intermittent fasters. The app has surpassed over 5,00,000 downloads since its launch in late 2018.

    The fasting tracker online has recorded nearly 7 million fasts to date. It is one of the first health solutions with an advanced tracker to waist circumference, glucose, and ketones.

    Additionally, if you are on the keto diet, this app will help you to track the duration for which you have been on ketosis.

    best intermittent fasting app for 2020

    Image Credit: Life Fasting Tracker

  3. BodyFast

    BodyFast app is a Germany-based online intermittent fasting plan platform. With its innovative and different fasting plans, it has been among the top intermittent fasting apps.

    It allows users to choose a coach and follow his meal planning tips. The user can upgrade and take up weekly challenges to stay competitive and keep you motivated.

    The app has a specifically curated FAQs section that provides the answers to most of the possible questions about IF for beginners. The fasting tracker has over 8 million people to date using the app on a regular basis.

    best intermittent fasting app for 2020

    Image Credit: BodyFast

  4. Ate Food Diary

    This social intermittent best fasting app is a visual food diary, which helps in keeping track of how much time lapsed between meals and snacks.

    This application allows users to share on social media, makes them look back on their choices and how they made them feel.

    It is the fastest and easiest food journal and makes a user experiment with new habits, to see what works for an individual. This makes Ate Food Diary, the best food tracking app.

    best intermittent fasting app for 2020

    Image Credit: Ate Food Diary

  5. Vora

    This app provides daily weight loss goals, fasting hours, and your overall progress. Vora can be a great weight loss app if you are looking for a similar feature in an app. Vora is a cloud-based best fasting app, as it allows users to create, edit, and delete the fasts.

    Let’s users view their last 7 fasts in a beautiful chart that shows their target achievements. The Vora app allows users to set the fasting program they like from full fast to 5:2 to alternate day diet types. So far, the app has over 3,00,000 fasters community.

    best intermittent fasting app for 2020

    Image Credit: Vora

    According to Dr. Elizabeth Lowden “Alternate-day fasting tends to include both regular food intake alternating with full fasting, meaning no food intake at all, or a significantly reduced intake of about 500 calories.”

  6. Fastient

    To maintain accountability while fasting a one meal plan and records of the food intake is necessary.

    The Fastient app has a wide, open interface that leaves plenty of room for a user’s journal; they can view data in easy-to-read graphs and record their food intake easily through the fasting schedule tracker.

    best intermittent fasting app for 2020

    Image Credit: Fastient

  7. FastHabit

    Featured by GQ, The Guardian, and The Fast Company, FastHabit is one of the top Intermittent Fasting Apps.

    The app is for beginners as well as regular users who need to change their app or start fasting using an app. It claims to tame your cravings and help you lose weight.

    FastHabit is a top-rated app on the iOS platform with 4.8 stars out of 5. It is loved by thousands of users who are passionate about intermittent fasting.


    Image Credit: FastHabit

  8. Window

    The Window app is easily customized to track your fasting and eating window duration, monitor weight loss or gains to motivate people. Also, you can manage your weight reduction goals from the app too.

    Choose a plan for yourself and define your fasting time. Customize it accordingly concerning the eating duration and start time. Get notification when the eating window is opened, and then you can start your fasting.

    Window App

    Image Credit: Window

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Frequently Asked Questions

Which are the best intermittent fasting apps for iOS?

After considering the customer reviews of App Store, we have found out that these five applications are the best intermittent fasting applications for iOS:

  1. Zero
  2. FastHabit
  3. Ate Food Diary
  4. BodyFast
  5. LIFE Fasting

Which are the best free fasting apps for Android?

After considering the Play Store’s customer reviews, we have found out that the following applications are the best free intermittent fasting apps for Android:

  1. Zero
  2. Fastient
  3. BodyFast
  4. LIFE Fasting

How much weight can I lose after 15 days using intermittent fasting?

Based on the study of ScienceDirect, after following intermittent fasting for 3-24 weeks, the approx body weight reduced by 3 to 8%. After examining the rate of fasting and weight loss, the overall result of weight reduction in a person was found from 0.55 to 1.65 pounds per week.


If you are a professional dietitian or running a fitness & wellness center, looking for the best way to track your customer’s fasts and weight loss progress, we have the apt app solution in the form of a simple fasting app.

Being a leading iPhone app development company, we have developed mobile apps in almost every genre, from taxi to food delivery to health and fitness.

Here are some of the facts that will help you distinguish us from the other leading mobile app development companies.


Still have any confusion or query regarding building the best app for intermittent fasting, the cost to develop a mobile app for fasting, IF app development timeline, and how to create an app, just fill our contact us form. One of our sales representatives will get back to you shortly. The consultation is free of cost.

Author Bio
Narendra Purohit
Narendra Purohit
Designation: Vice President (Products)

Narendra Purohit is Vice President (Products) at Space-O Technologies. He has in-depth knowledge about software delivery and 14+ years of experience in the web and mobile app development industry. He has expertise in the photo-video apps, lifestyle apps, dating app industry.