Best Fasting Apps for Weight Loss

Here you can get information about Best Fasting Apps for Weight Loss. There are several variations of the IF diet. Some of the more popular ones are 16:8, in which you limit your eating to an 8-hour window, say noon to 8 p.m.; the 5-2, in which you eat normally five days a week, and then limit yourself to about 500 calories on the other two days; and the OMAD (one-meal-a-day) plan, which is exactly what it sounds like. “If you do choose to try IF, just make sure that the quality of foods you eat in your feeding window are nutritious and provide all the proper nutrients that your body needs,” advises Sassos.

Here are 8 dietitian-approved intermittent fasting apps designed to make following any kind of IF plan easier.

Table of Contents


  • Zero is the world’s most popular fasting app.
  • As seen in Women’s Health, The Tim Ferriss Show, The Drive and more.
  • Unlock the power of intermittent fasting to improve your health and manage weight.

Zero’s advisory team includes some of the world’s leading doctors and researchers, including our Chief Medical Officer Dr. Peter Attia, who guides our fasting protocols and content creation.

Reach your healthy weight goals no matter what diet you follow – from keto, or low carb, to simple calorie counting – and unlock the full longevity benefits of fasting through Zero’s expert guidance and content.


  • TIMER – Set your goal, start your timer, stay on track. We’ll be with you from start to finish with reminders and insights to keep you motivated.
  • LEARN – Fuel your fast with our ever-growing content library curated by Chief Medical Officer, Dr. Peter Attia.
  • STATISTICS – Chart your progress and map your journey with an all new calendar view. Sync with Google Fit to track health markers like weight and sleep to see how they evolve with your fasting practice.
  • JOURNAL – Reflect on how you feel during your fasts. We’ll graph your moods so you can track trends and adjust over time.
  • CHALLENGES – Opt into Challenges that align with your goals, invite friends, unlock Achievements, and stay motivated with guidance from our experts and the chance to win exclusive prizes.


Unlock all the benefits of fasting with Zero Plus.

  • CUSTOM PLANS – Fast track your fasting goals with a personalized protocol and adaptive recommendations from our team of experts.
  • PREMIUM CONTENT – Cut through the noise with an exclusive, ever-growing library of videos, articles, audio segments, and Q&As from fasting experts like Dr. Peter Attia.
  • FASTING ZONES – Know what’s happening in your body so you can stay motivated to reach key metabolic milestones.
  • ADVANCED STATISTICS – See how your fasting practice correlates with other health markers like weight and heart rate. Spot trends and adjust your behavior to stay on target.
  • ASK ZERO – An expert in your pocket. Submit your fasting questions, then tune in for a chance to get answers from experts like Dr. Peter Attia.
  • CUSTOM PRESETS – When your fasting needs are more unique than our popular presets, you can create your own.
  • ADVANCED JOURNAL WITH IN-THE-MOMENT MOTIVATION – Feeling hungry? Log your mood and receive responsive content including exclusive Fasting Meditations.

Additional Information

Updated24 February 2022
Current Version2.20.1
Requires Android5.0 and up
Content ratingRated for 3+
Offered ByBig Sky Health, Inc.

Download Zero


BodyFast guides you on your journey to success. Reach your goal weight, get healthy and feel full of energy.

The BodyFast app

  • Intermittent fasting for beginners and experienced fasters
  • A personalized fasting plan from the BodyFast Coach every week
  • Tailored to your goals and progress
  • Daily coaching for motivation, knowledge and tips
  • 100+ recipes – developed for your fasting success
  • Know what you’re eating – with our food facts
  • Track your weight and body measurements
  • Drink enough water with the water tracker
  • Weekly challenges for better health and more physical activity

Many free features

  • More than 10 fasting plans like 16-8 or 5-2
  • Fasting clock including reminders
  • Track your weight and body measurements
  • Fasting stages: See what’s happening in your body while fasting
  • Water tracker
  • Knowledge pool for intermittent fasting

The BodyFast Coach

Reach your goals 30% faster!

The BodyFast Coach calculates the optimal fasting plan for you every week. It also motivates you with challenges and tips for a healthier life. With over 100 cooking recipes you’ll accelerate your weight loss success.

  • A new fasting plan every week from the BodyFast Coach
  • Your personalized program based on your progress and goals
  • Daily coaching with knowledge, tips and motivation
  • 100+ delicious recipes specially tailored for fasting
  • Get instant SOS help from BodyFast’s team of experts
  • Unlock all fasting plans
  • Collect trophies for your achievements
  • Take a “Joker Day” off from fasting

Intermittent fasting with BodyFast

  • It has never been easier to lose weight and feel great
  • Become slim and healthy with simple breaks from eating
  • You can eat what you want – no calorie counter needed
  • No diet, no yoyo-effect
  • Develop healthy routines
  • Improve your relationship with food

Additional Information

Updated1 March 2022
SizeVaries with device
Current Version3.10.25
Requires Android5.0 and up
Content ratingRated for 3+
Offered ByBodyFast GmbH

Download BodyFast



With this simple intermittent fasting app with meal tracker and water tracker features, keeping track of your eating habits and achieving weight loss results has never been easier! Learn how to fast and lose weight, get simple healthy diet tips with Simple – a meal planner and fasting tracker app with diet tracker, weight loss tracker, and food and water tracker (yes, you have to drink water in sufficient amounts!) features. Intermittent fasting is the most popular, healthy, and effective weight-loss method and it’s trusted by hundreds of millions worldwide!

In a nutshell, Simple provides the following set of features:

  • Intermittent fasting tracker;
  • Weight loss tracker;
  • Water tracker & drink water reminder;
  • Nutrition tracker.

What is intermittent fasting (IF) and why can it help?

IF is the most ancient eating pattern known to humans and anyone can benefit from it. You alternate eating and fasting periods and use the Simple intermittent fasting tracker app to set up your schedule. For example, you fast during a 16-hour window and can then eat during 8 hours (16:8 fasting).

IF does not tell you what food you can’t eat or to count your calories – it’s not a strict diet plan for weight loss. Instead, it simply asks that you eat zero calorie during a specific period each day.

This simple fasting app is worth it. Even short fasting periods (12 hours or more that you can set in the fasting timer) may result in weight loss, improved metabolic flexibility, and reduce the risk of metabolic diseases. This small lifestyle change will enable you to reinstate normal processes in your body that you’ve lost due to frequent eating. You just have to make sure to drink water during your fasting period. And the best thing is that you have a meal planner, food tracker, and water tracker all in one place – the Simple app. The app’s water drinking reminder will be your best assistant in your fasting periods.

How do I start IF?

You don’t have to download many fasting apps or know anything about fasting. Simple will guide you and help you achieve your health goals. Simple is not just a fasting tracker. It’s an intermittent fasting app that provides you with health, weight loss, and cognitive power.

Additional Information

UpdatedFebruary 13, 2022
Current Version6.4.20
Requires Android7.0 and up
Content ratingEveryone 10+
Offered BySimple.Life Apps Inc

Download Simple



Window is a customizable, intelligent and well-designed intermittent fasting tracker that you can use to track fasting and eating windows, monitor your weight and to motivate yourself.

Manual setup: You can manually manage when your fasting period starts and ends.

Great tool for weight loss: Monitor your weight changes in dynamics. Try water fasting.

Progress tracking: See your journey in a timeline and your journal with photos and notes on your results.

Motivation without stress: No exhausting challenges. No annoying notifications. Intelligent attentive relations between you and yourself.


All you need to do is define how long your fasting will be.
Then choose a plan and customize its eating window duration and its start using fasting timer.
Start fasting and get notified when your eating window is opened.
That’s it!

See how intermittent fasting diet influences your weight and track your progress in a smart timeline. You can attach photos, health and mood notes to see the qualitative dynamics of your fasting journey too!

Free features:

  • Manual adjustment of fasting and eating windows like 16-8 or 5-2
  • 2 fasting plans
  • Smart intelligent notifications
  • Fasting diary and timeline with your photos and mood or recipe notes
  • No advertisement

Premium Features:

  • Use weight tracking without any limits
  • Switch to one of 8 fasting plans

Additional Information

Updated10 November 2021
Current Version1.36.1
Requires Android7.0 and up
Content ratingRated for 3+
Offered ByThriveport

Download Window

LIFE Fasting Tracker

Sustainably lose weight and improve your health with intermittent fasting. Designed to easily track your fasts and keep you accountable to your goals. LIFE Fasting has helped millions of users lose weight, control blood sugar, reduce inflammation, and lead healthier lives.

Works with any style of eating – whether it’s keto, vegetarian, paleo, plant-based, intuitive eating, or any other diet. Stop focusing on calories and reset your body with intermittent fasting. Easy-to-use intermittent fasting tracker with a built-in community and access to expert guidance.

Over 50% of LIFE app users lost 5% of their starting weight in just 6 months – and they kept it off!

Includes in-app learning library with research-based articles and tips for beginner, experienced intermittent fasters, and fasters practicing a keto or paleo diet – for free!

Featured on Good Morning America, USA Today, Men’s Health, PopSugar, and more, LIFE Fasting is the top-rated intermittent fasting tracker.

What is intermittent fasting?

Intermittent fasting is a metabolic health intervention that often involves a daily cycle of fasting and feeding with the goal of raising ketone levels, shown to improve body and brain function. Different approaches to intermittent fasting include:

  • Alternate day fasting: Involves eating fewer than 500 calories every other day.
  • 5:2 Approach: Involves two fast days of fewer than 500 calories per week
  • Time-restricted feeding: Involves eating within a narrow 8-10 hour window each day

What are the benefits of intermittent fasting?

  • Sustainable weight loss
  • Improved weight management
  • Reduced inflammation
  • Improved lipid levels and heart health
  • Improved blood sugar control
  • Improved insulin sensitivity
  • Increased cellular recycling (autophagy)

Additional Information

Updated13 March 2022
Current Version5.7.1
Requires Android6.0 and up
Content ratingRated for 3+
Offered ByLifeOmic

Download LIFE Fasting Tracker



Say bye, bye to fad diets and start intermittent fasting with Fastic. We’re the world’s largest fasting community with over 20M users, so you’ll find the motivation and support you’re looking for. Looks good, feel great and develop healthy habits with the expert-backed Fastic app.

So, how does it really work?

Intermittent fasting has been shown to lead to sustainable weight loss. That means you’ll get reconnected to your body for results that last. When fasting, your body enter ketosis, the body’s “fat-burning” process. You’ll have more energy during this time to do what you love, and lose stubborn fat at the same time!

Is Intermittent Fasting healthy?

Yes. The Nobel Prize-winning fasting method is safe and natural. Studies show that giving the body a short break from constant digestion gives vital organs a chance to rest, and even promotes cell regeneration!

Is the Fastic App suitable for me?

The Fastic app is great for beginners and fasting veterans alike. You won’t need to change your diet, or restrict any groups of food. It’s super easy to integrate into your life!

Why Intermittent Fasting?

  • Burns body’s fat reserves
  • Promotes regeneration and detoxification
  • Slows down aging process
  • Can prevent diabetes and other diseases
  • Improves life quality
  • Helps lose weight without dieting
  • Avoids yo-yo effect
  • Avoids calorie-counting

Start Intermittent Fasting with Fastic

  • Fasting Timer – Tracks fasting window effortlessly
  • Body Status – Identifies and tracks key stages in your fasting journey
  • Water Tracker – Logs your water intake and sends reminders
  • Step Counter – Monitors your step count to enhance your progress
  • Continuous app development and feature updates
  • Suitable for both beginners and advanced
  • Suitable lifestyle change for men and women
  • Google Fit synchronization possible
  • Free of advertising

Additional Information

UpdatedMarch 15, 2022
Current Version1.88.0
Requires Android5.0 and up
Content ratingTeen
Offered ByFastic GmbH

Download Fastic



Fastient is an easy-to-use fasting tracker that beautifully displays your progress before, during, and after a fast. Features of Fastient include the ability to track your daily achievements and journal symptoms, mood, weight, and more. Fastient users have the ability to add and edit previous fasts.


  • Design
    • View your progress in a beautifully-designed completion bar
    • Simple home screen to quickly view your current stats
    • View your weight loss as a graph anytime, fasting or feeding
  • Customize
    • Edit the start time of your fast (i.e. last night after dinner)
    • Easily add an end goal to your fast
    • Cancel your current fast – will not add to your stats
  • Sync
    • Access Fastient from any device, on any platform
    • Import previous fasts from other tracking apps via .csv file
  • Journal
    • Jot down thoughts, feelings, and cravings in a simple note
    • Use quick-tag emojis to instantly express your current mood or symptoms
    • Your data is secure; delete your data and account whenever you wish
  • Premium Features
    • Add progress pictures
    • Quick-tag emojis

Additional Information

Updated23 April 2019
Current Version1.0.303
Requires Android5.1 and up
Content ratingRated for 3+
Offered BySTCCR Web Design

Download Fastient



NOW WITH WEIGHT TRACKING! FastHabit helps you start and stay consistent with Intermittent Fasting. Set your fast length, log daily, and use advanced features like reminders, weight tracking, calendar views, data export, and multi-day fasting to track your progress and accelerate your results.


  • Choose how many hours you want to fast
  • Keep your motivation in view- See percent complete, time completed, time remaining, and
  • target end.
  • Easy editing. Stop, restart, or adjust your fast at any time.


  • Log your weight records
  • Choose your weight units (Kg, Lb, Stones)


  • Choose the days and times you want reminders to start fasting
  • Get a notification when your fast is complete


  • 10 day Snapshot with ‘streaks’ to show how many days in a row you’ve fasted and how
  • many days you’ve met your goals – a great way to stay motivated.
  • Calendar and weekly views with daily details
  • Weight tracking views with fasting overlay


  • Getting started guide
  • Enhanced support for longer, multi-day fasts
  • Export your fasting data

Additional Information

Updated13 April 2021
Current Version1.1.31
Requires Android5.0 and up
Content ratingRated for 3+
Offered ByWhitespectre Apps

Download FastHabit

Best Fasting Apps for Weight Loss

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