Best Fasting Calculator Apps

241+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated June 2026

The best fasting calculator apps on iPhone average 4.7★ across 241+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.

Top Picks for Fasting Calculator

Intermittent Fasting Tracker:#1

Intermittent Fasting Tracker: by Kai Oelfke

Simple 16:8 Fast Timer
Editor's Choice
💪 Health & Fitness
4.9😊(43K ratings)
FreeIn-App Purchases
Intermittent Fasting Tracker: screenshot 1
Intermittent Fasting Tracker: screenshot 2
Intermittent Fasting Tracker: screenshot 3
Intermittent Fasting Tracker: screenshot 4
Intermittent Fasting Tracker: screenshot 5
Intermittent Fasting Tracker: screenshot 6

Track your intermittent fasting effortlessly with this privacy-friendly app! Stay focused with Widgets, Notifications, Charts, and more. Start your fasting journey today - download now!

What We Love

  • 👍 Simple and easy to use
  • 🚀 Straightforward fasting tracking
  • 🔒 No ads or subscriptions
  • 💡 Customizable fasting times

Room to Improve

  • 🐛 Occasional issues with time tracking
  • 💡 Desire for more customization options
  • 💡 Request for monthly/yearly fasting view
Zero: Fasting Tracker App#2

Zero: Fasting Tracker App by Zero Longevity Science, Inc.

Intermittent Fasting Timer
Strong Contender
💪 Health & Fitness
4.7😊(42K ratings)
FreeIn-App Purchases
#96in Health & Fitness
Zero: Fasting Tracker App screenshot 1
Zero: Fasting Tracker App screenshot 2
Zero: Fasting Tracker App screenshot 3
Zero: Fasting Tracker App screenshot 4
Zero: Fasting Tracker App screenshot 5
Zero: Fasting Tracker App screenshot 6

Achieve your health goals with an app that tracks fasting schedules, provides personalized recommendations, and offers a community for support and motivation. Start your journey towards better health today.

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
Fasting Tracker & Diet App#3

Fasting Tracker & Diet App by Hendrik Folkerts

Simple Fast Timer 16:8 & 5:2
Worth Considering
💪 Health & Fitness
4.6😊(11K ratings)
Free
Fasting Tracker & Diet App screenshot 1
Fasting Tracker & Diet App screenshot 2
Fasting Tracker & Diet App screenshot 3

Track your fasting progress, log meals, set fasting goals, and monitor your eating patterns with this comprehensive fasting tracker app. Stay on top of your fasting routine and achieve your health goals effortlessly. Download now and start your fasting journey!

What We Love

  • 🚀 Great app
  • 👍 Simple and easy to use
  • 💡 Helpful for tracking fasting
  • 🚀 Effective for weight loss

Room to Improve

  • 🐛 Cannot edit start/stop times
  • 🐛 Inaccurate fasting history tracking
  • 🐛 Continues running timer after fast ends

More Fasting Calculator apps to explore

4
Intermittent Fasting Tracker -
Intermittent Fasting Tracker -
Intermittent Fasting Tracker -
Fasting App: Lose Weight Fast
Free

An intuitive fasting app that guides you through various fasting plans to help you lose weight effectively and feel more active. With features like timers, statistics tracking, and personalized insights, it supports both beginners and experienced users on their fasting journey. Subscribe to access all features for personalized fasting experience.

💪 Health & Fitness
(28K)
5
Fasting Tracker • Easy Fast
Fasting Tracker • Easy Fast
Fasting Tracker • Easy Fast
Intermittent Fasting Timer
Free

Achieve effortless intermittent fasting with our user-friendly app that helps streamline your fasting routine. Take control of your health and wellness today – download now!

💪 Health & Fitness
(7.6K)
6
BodyFast: Intermittent Fasting
BodyFast: Intermittent Fasting
BodyFast: Intermittent Fasting
Weight Loss Diet, Meal Tracker
Free

Stay healthy and track your 16:8 intermittent fasting with our weight loss application. Achieve your fitness goals easily with personalized fasting plans, progress tracking, and reminders to stay on track. Start your journey towards a healthier lifestyle today!

💪 Health & Fitness
(144K)
7
Fasting App: Tracker & Timer
Fasting App: Tracker & Timer
Fasting App: Tracker & Timer
Intermittent Fasting for Body
Free

Get your health back on track with our fasting app! Monitor your fasting periods, track progress, set goals, and get personalized recommendations to achieve a healthier lifestyle. Start your journey to better health today.

💪 Health & Fitness
(4.8K)
8
FastEasy: Intermittent Fasting
FastEasy: Intermittent Fasting
FastEasy: Intermittent Fasting
Simple Weight Loss & Tracker
Free

Lose weight effortlessly with our intuitive intermittent fasting app. Track your fasting schedule, monitor progress, and achieve your weight loss goals with ease. Try it now for a healthier you!

💪 Health & Fitness
(79K)
9
Fastic Weight Loss & Fasting
Fastic Weight Loss & Fasting
Fastic Weight Loss & Fasting
Protein, Tracker, Nutrition
Free

Get personalized meal plans, track your fasting schedule, and access a community for support on your health journey. Join thousands in achieving your wellness goals today!

💪 Health & Fitness
(246K)
10
FastHabit Intermittent Fasting
FastHabit Intermittent Fasting
FastHabit Intermittent Fasting
Track your fasts and progress
Free

Track your intermittent fasting progress effortlessly with this app. Set fasting lengths, receive reminders, sync with Apple HealthKit, and enjoy features like weight tracking and calendar views to stay motivated and achieve your fasting goals.

💪 Health & Fitness
(14K)
11
Fasting + Intermittent Fasting
Fasting + Intermittent Fasting
Fasting + Intermittent Fasting
Fasting Tracker - Lose Weight
Free

Track your intermittent fasting effortlessly with a user-friendly app designed to help you lose weight and improve overall health. Personalized meal plans, expert coaching, and a variety of fasting plans make it easy to achieve your goals. Download now for free and start your journey to a healthier lifestyle.

💪 Health & Fitness
(6.6K)
12
Fastin: Intermittent Fasting
Fastin: Intermittent Fasting
Fastin: Intermittent Fasting
Simple Weight Loss Tracker App
Free

"Discover the power of intermittent fasting with our weight loss tracker app. Shift your eating schedule to lose weight, improve health, and simplify your lifestyle. Join us on the fasting journey towards a longer, healthier life!"

💪 Health & Fitness
(10K)
13
Simple: AI Weight Loss Coach
Simple: AI Weight Loss Coach
Simple: AI Weight Loss Coach
Build a Healthy Body for Life
Free

Get personalized nutrition and exercise plans, track your progress, and receive coaching support with this weight loss application. Achieve your health goals easily with tailored guidance and motivation. Start your journey to a healthier you today!

💪 Health & Fitness
(380K)
14
Intermittent Fasting Tracker ™
Intermittent Fasting Tracker ™
Intermittent Fasting Tracker ™
Simple intermittent fasting
Free

A fasting tracker app that supports personalized intermittent fasting plans, offers insights on body stages, mood tracking, educational resources, and motivation tools. Start and end fasts with a timer, create custom plans, and access premium content to enhance your fasting experience. Take charge of your fasting journey and achieve your weight goals with ease.

💪 Health & Fitness
(2.3K)
15
Intermittent Fasting and Diet.
Intermittent Fasting and Diet.
Intermittent Fasting and Diet.
Eating Timer & Weight Traсker
Free

This application helps users track their fasting and eating cycles through a timer and provides guidance on intermittent fasting and diet plans. Start your journey to health and wellness today with our easy-to-use app!

💪 Health & Fitness
(5.2K)
16
Intermittent Fasting Tracker!
Intermittent Fasting Tracker!
Intermittent Fasting Tracker!
Weight Loss: Fast・Easy・No Diet
Free

Track your intermittent fasting journey effortlessly with this app, tailored for weight loss, health improvement, and more. Set fasting goals, monitor your progress with a timer, receive notifications, and sync fitness data for personalized fasting plans. Start your fasting success today!

💪 Health & Fitness
(2K)
17
Suavita: Fasting Tracker App
Suavita: Fasting Tracker App
Suavita: Fasting Tracker App
Intermittent Fasting & Water
Free

Track your long fasts effortlessly with this application. Monitor your fasting progress, set goals, receive reminders, and access helpful resources to support your fasting journey. Start your journey to better health today!

💪 Health & Fitness
(3.5K)
18
Prime: Intermittent Fasting
Prime: Intermittent Fasting
Prime: Intermittent Fasting
The fasting app for women
Free

The Prime: Intermittent Fasting App is designed exclusively for women, offering a 16:8 fasting protocol, weight tracking, water tracking, personal recommendations, community support, and more. Take control of your health, achieve your fitness goals, and enjoy the benefits of intermittent fasting. Download now and start your journey to a healthier you!

💪 Health & Fitness
(4.6K)
19
Fast: Intermittent Fasting App
Fast: Intermittent Fasting App
Fast: Intermittent Fasting App
16:8 Fasting Timer & Tracker
Free

Fast Diet Tracker for Intermittent Fasting: Track your fasting periods, log meals, set goals, and receive personalized insights for effective intermittent fasting. Download now for a healthier lifestyle!

💪 Health & Fitness
(3.3K)
20
Daily Fast
Daily Fast
Daily Fast
An Intermittent fasting timer
Free

A free intermittent fasting timer app with no ads, sign-ups, or surveys, designed specifically for intermittent fasting alerts without extra features.

💪 Health & Fitness
(3.5K)