Best Certified Fasting Apps

243+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated May 2026

Out of 243+ certified fasting apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Top Picks for Certified Fasting

Zero: Fasting & Food Tracker#1

Zero: Fasting & Food Tracker by Zero Longevity Science, Inc.

Intermittent Fasting Timer
Editor's Choice
💪 Health & Fitness
4.8😊(445K ratings)
FreeIn-App Purchases
Zero: Fasting & Food Tracker screenshot 1
Zero: Fasting & Food Tracker screenshot 2
Zero: Fasting & Food Tracker screenshot 3
Zero: Fasting & Food Tracker screenshot 4
Zero: Fasting & Food Tracker screenshot 5
Zero: Fasting & Food Tracker screenshot 6

This app tracks intermittent fasting and nutrition to help users achieve real body composition changes. It integrates fasting, protein intake, meals, hydration, and habits for a holistic approach to weight loss and metabolic health.

What We Love

  • 🚀 Easy to use
  • 📊 Helpful tracking and data
  • 💡 Informative learning resources
  • 🔍 Detailed fasting information

Room to Improve

  • 💰 Expensive premium subscription
  • 🔒 Forced account creation
  • 🙄 Intrusive ads and upsells
BodyFast: Intermittent Fasting#2

BodyFast: Intermittent Fasting by BodyFast GmbH

Weight Loss Diet, Meal Tracker
Strong Contender
💪 Health & Fitness
4.7😊(144K ratings)
FreeAdsIn-App Purchases
BodyFast: Intermittent Fasting screenshot 1
BodyFast: Intermittent Fasting screenshot 2
BodyFast: Intermittent Fasting screenshot 3
BodyFast: Intermittent Fasting screenshot 4
BodyFast: Intermittent Fasting screenshot 5
BodyFast: Intermittent Fasting screenshot 6

This app guides users through intermittent fasting to achieve weight loss, improve health, and boost energy. It offers personalized plans, daily coaching, recipes, and tools like a water tracker and weight log. Users can choose from various fasting plans and track their progress towards their health goals.

What We Love

  • 👍 Easy to use
  • 🚀 Helpful for weight loss
  • 💪 Effective for fasting
  • 🔔 Useful reminders and notifications

Room to Improve

  • 🤔 Confusing to adjust fasting times
  • 💰 Expensive subscription
  • 🔒 Difficult to cancel subscription
Fasting Timer & Water Tracker#3

Fasting Timer & Water Tracker by Artmvstd SIA

Water Fasting App
Worth Considering
💪 Health & Fitness
4.6(75 ratings)
FreeAdsIn-App Purchases
Fasting Timer & Water Tracker screenshot 1
Fasting Timer & Water Tracker screenshot 2
Fasting Timer & Water Tracker screenshot 3
Fasting Timer & Water Tracker screenshot 4
Fasting Timer & Water Tracker screenshot 5
Fasting Timer & Water Tracker screenshot 6

This app helps you track intermittent fasting and water intake with personalized plans and custom timers. Monitor progress with insights and receive reminders to stay on track with your health and fitness goals.

More Certified Fasting apps to explore

4
Fastic Weight Loss & Fasting
Fastic Weight Loss & Fasting
Fastic Weight Loss & Fasting
Protein, Tracker, Nutrition
Free

This app guides users through personalized intermittent fasting and nutrition plans to achieve sustainable weight loss. It offers features like a food scanner, progress tracking, and a community for support, helping users burn fat and improve overall health.

Personalized fasting and nutrition plansProtein fasting for muscle maintenanceIntermittent fasting for fat burning
💪 Health & Fitness
(246K)
free with in-app purchases
5
FastEasy: Intermittent Fasting
FastEasy: Intermittent Fasting
FastEasy: Intermittent Fasting
Simple Weight Loss & Tracker
Free

This app guides users through intermittent fasting to achieve weight loss and improve health. It offers customizable fasting plans, a timer, water tracking, and personalized recipes. Track your progress and gain insights into your body's changes.

Customizable fasting plansFasting timer and remindersWater intake tracker
💪 Health & Fitness
(79K)
free with in-app purchases
6
Fasting App: Tracker & Timer
Fasting App: Tracker & Timer
Fasting App: Tracker & Timer
Intermittent Fasting for Body
Free

This app guides users through intermittent fasting for weight loss and improved health. It offers simple tracking, personalized plans, and smart notifications to help establish healthy habits without restrictive diets.

Intermittent fasting guidanceWeight loss without restrictive dietsOMAD and 16/8 timer options
💪 Health & Fitness
(4.8K)
free with in-app purchases
7
DoFasting Intermittent Fasting
DoFasting Intermittent Fasting
DoFasting Intermittent Fasting
Healthy diet & macros diary
Free

This app offers personalized intermittent fasting plans to support weight loss and healthy eating. It includes trackers for calories, water, and steps, along with a vast recipe library and workout routines designed by professionals. Users receive tailored guidance and motivation to build sustainable habits.

Personalized intermittent fasting plansCalorie, fasting, water, and step trackersHealth app integration for seamless monitoring
💪 Health & Fitness
(4.8K)
subscription
8
FastHabit Intermittent Fasting
FastHabit Intermittent Fasting
FastHabit Intermittent Fasting
Track your fasts and progress
Free

This app helps you establish and maintain intermittent fasting routines. It offers flexible tracking, reminders, and integrates with Apple Health and Apple Watch to monitor your progress and weight.

Flexible fast length settingDaily logging and progress trackingReminders and notifications
💪 Health & Fitness
(14K)
freemium
9
Fastin: Intermittent Fasting
Fastin: Intermittent Fasting
Fastin: Intermittent Fasting
Simple Weight Loss Tracker App
Free

This app guides you through intermittent fasting for weight loss and improved health. It offers personalized plans, tracking tools for food, weight, water, sleep, and activity, along with educational courses on fasting and nutrition. Visualize your progress with detailed statistics to stay motivated on your journey.

Personalized fasting plansFood, weight, water, sleep, and activity trackingFasting and nutrition courses
💪 Health & Fitness
(10K)
subscription
10
Jeûne Intermittent Easy Fast
Jeûne Intermittent Easy Fast
Jeûne Intermittent Easy Fast
Suivi de jeûne pour tous
Free

This app helps you track intermittent fasting with a simple, ad-free timer. It offers core features for free, with optional Pro upgrades for advanced tracking, widgets, and Apple Watch integration. Your data is kept private with no account required.

Intermittent fasting timerWater tracking with remindersWeight tracking
💪 Health & Fitness
(8K)
freemium
11
Intermittent Fasting and Diet.
Intermittent Fasting and Diet.
Intermittent Fasting and Diet.
Eating Timer & Weight Traсker
Free

This app guides you on a journey to a healthier lifestyle by improving your metabolism and aiding in weight loss. It offers tools to track your eating habits, monitor weight, and access informative articles. A personal fasting consultant is available in the paid version.

Fasting timer with tipsAdvanced fasting statisticsCustomized fasting plans
💪 Health & Fitness
(5.2K)
free with in-app purchases
12
Prime: Intermittent Fasting
Prime: Intermittent Fasting
Prime: Intermittent Fasting
The fasting app for women
Free

This app offers a tailored intermittent fasting experience for women, featuring a fasting tracker, weight monitoring, and personalized guidance. It helps users achieve fitness goals, manage weight, and understand the health benefits of fasting with a focus on women's specific needs.

Fasting tracker (16:8 protocol)Weight trackerWater tracker with reminders
💪 Health & Fitness
(4.6K)
free with in-app purchases
13
Kompanion: Weight Loss Plan
Kompanion: Weight Loss Plan
Kompanion: Weight Loss Plan
Intermittent Fasting & Diet
Free

This app combines intermittent fasting timers with a smart nutrition toolkit to help you lose weight. It features AI-powered meal scanning to estimate calories and macros, personalized fasting plans, and insights into your body's metabolic stages. Track your progress, mood, and energy levels to optimize your health journey.

AI-powered meal scanning for calorie and macro estimationFlexible intermittent fasting timer with personalized plansBody stage tracking (Ketosis, Autophagy)
💪 Health & Fitness
(9.3K)
free with in-app purchases
14
Intermittent Fasting Tracker ™
Intermittent Fasting Tracker ™
Intermittent Fasting Tracker ™
Simple intermittent fasting
Free

This app guides users through intermittent fasting with personalized plans, a timer, and insights into body stages. It offers a journal, learning center, and progress tracking to support users in achieving health and wellness goals.

Fasting timer with one-tap start/endPersonalized and custom fasting plansBody stage insights during fasting
💪 Health & Fitness
(2.3K)
free with in-app purchases
15
Intermittent Fasting Tracker -
Intermittent Fasting Tracker -
Intermittent Fasting Tracker -
Fasting App: Lose Weight Fast
Free

This app helps users achieve sustainable weight loss and health goals through personalized intermittent fasting plans and an AI-powered calorie counter. It offers features like food scanning, hydration tracking, and detailed progress monitoring. Users can access science-based insights and healthy recipes to support their journey.

Personalized fasting plansAI calorie counter and food loggerWater and hydration tracker
💪 Health & Fitness
(28K)
freemium
16
Window - Intermittent Fasting
Window - Intermittent Fasting
Window - Intermittent Fasting
Fast Tracker & Eating Timer
Free

This app helps you adopt an intermittent fasting lifestyle with science-based guidance and personalized recommendations. Track your fasting and eating periods, monitor weight loss goals, and stay hydrated. Access expert insights and challenges to build healthier habits.

Fasting timerWeight journalWater tracker
💪 Health & Fitness
(11K)
freemium
17
Suavita: Fasting Tracker App
Suavita: Fasting Tracker App
Suavita: Fasting Tracker App
Intermittent Fasting & Water
Free

This app helps users track various fasting durations, from intermittent routines to multi-day water fasts. It provides timers, reminders, and progress tracking to support users in achieving their fasting goals and building healthy habits. It offers features for both beginners and experienced fasters.

Intermittent fasting trackingLong-term fasting supportCustomizable fasting presets
💪 Health & Fitness
(3.5K)
free with in-app purchases
18
Intermittent Fasting - MyFast
Intermittent Fasting - MyFast
Intermittent Fasting - MyFast
Zero Calorie Fast Weight Loss
Free

This app helps you manage your intermittent fasting journey by scheduling fasting and eating windows. It offers customizable timers, progress tracking for weight loss and water intake, and educational resources to become an IF expert.

Schedule fasting and eating windowsCustomizable timers with notificationsTrack water intake and weight loss
🍔 Food & Drink
(3.2K)
free with in-app purchases
19
IF: Intermittent Fasting 16:8
IF: Intermittent Fasting 16:8
IF: Intermittent Fasting 16:8
Lose Weight Fast - No Diet
Free

This app simplifies intermittent fasting for weight loss and improved health. It offers personalized meal plans, a fasting tracker with reminders, and a supportive community. Achieve your fitness goals without restrictive dieting.

Fasting tracker with customizable intervalsPersonalized meal plans and recipesWater intake reminders
💪 Health & Fitness
(2.6K)
freemium
20
Intermittent Fasting Planner +
Intermittent Fasting Planner +
Intermittent Fasting Planner +
Simple Diet fоr Women
Free

This app guides users through intermittent fasting for weight loss and improved health. It offers customized plans, a user-friendly timer, progress tracking, and health insights to support your fasting journey.

Customized fasting plansEasy-to-use fasting timerWeight loss monitoring
💪 Health & Fitness
(91)
free with in-app purchases