8 Best Intermittent Fasting Apps That You Must Try in 2021

Being a professional dietitian or a 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.

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Best Intermittent Fasting Apps

Here is the list of best free weight loss 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
LIFE Fasting Tracker
  • 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
Ate Food Diary
  • 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

  2. Zero app has 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.

    The in-app timer automatically ticks down until sunset, when the user is supposed to start their fasting. The design of the best IF app is simple and easy to use.

    best intermittent fasting app for 2020

    Image Credit: Zero

  3. LIFE Fasting Tracker

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

    The benefit of IF applications 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.

    best intermittent fasting app for 2020

    Image Credit: Life Fasting Tracker

  5. BodyFast

  6. BodyFast app is a Germany based online IF platform. With its innovative and different fasting plans, it has been among the best 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

  7. Ate Food Diary

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

    Ate Food Diary allows users to share on social media, makes them look back on their choices and how it 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

  9. Vora

  10. This app provides daily fasting/goal timing and weight loss 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 intermittent 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.”

  11. Fastient

  12. To maintain accountability while fasting a 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

  13. FastHabit

  14. Featured by GQ, The Guardian, and The Fast Company, FastHabit is one of the top IF 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

  15. Window

  16. The Window app is easily customized to track your fasting and eating windows, monitor weight loss or gains to motivate people.

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

    Window App

    Image Credit: Window

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Frequently Asked Questions

What is intermittent fasting?

Intermittent means ‘cyclic or recurring’ and Fasting means ‘abstaining from eating’. Intermittent fasting is an eating pattern that allows eating and fasting for predetermined periods in a day. Instead of focussing on what to eat, it takes a new approach and focuses on when to eat. Here is a video- Dr. Oz Intermittent Fasting, that will explain the process along with intermittent fasting benefits.

Which are the types of intermittent fasting?

There are mainly 3 types of intermittent fasting that people used to perform. However, a new type called OMAD has recently joined the list. Let’s check:

Whole Day Fasting: You need to fast for one to two non-consecutive days a week. On fasting days, you need to consume 500 calories (200 calories to be consumed in the form of protein). You can either have one meal with 500 calories or spread out the eating schedule throughout the day.

Alternate Day Fasting: For the first 24 hours, you need to consume 500 calories with 200 calories to be consumed in protein form. You can either have one meal or spread out over the day. For the next 24 hours, you can eat whatever you want and whenever you want. However, it is preferred that you eat fruits, salads, and proteins in more amounts instead of carbohydrates.

Time-restricted Feeding: Every day, you need to fast for 16 to 20 hours a day and consume nothing but water and zero-calorie tea. In the remaining 4 to 8 hours, you can eat whatever you want. However, eating healthy is preferred. Most people choose the 8-hour fasting windows from 12 pm to 8 pm, or 10 am to 6 pm.

OMAD: You can call this a spinoff of intermittent fasting. OMAD stands for one meal a day. You can have one gigantic meal every day and then nothing the rest of the time. You eat whatever you want in one hour and then fast for 23 hours. This trend grew largely on Reddit with over 138k members on r/OMAD subreddit.

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 intermittent fasting apps for Android?

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

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


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 intermittent fasting app, the cost to develop a mobile app for fasting, intermittent fasting 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.