# 5:2 Fast Diet Calculator, Tracker & Planner

> Personalized 5:2 diet fasting day calorie calculator and tracker. (iPhone/iPad app by App Ktchn Ltd.)

- Source: https://appshunter.io/ios/app/52-fast-diet-calculator-tracker-and-planner/id700580184 (this page in markdown: same URL + `.md`)
- Developer: [App Ktchn Ltd](https://appshunter.io/developer/870718126)
- Category: Food & Drink, Health & Fitness
- Price: $1.99
- Rating: 1.00/5 from 6 App Store ratings · 59 written reviews indexed
- Age rating: 17+
- Requires: iOS 8.0 · 19 MB
- Languages: American English, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2013-09-14
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/52-fast-diet-calculator-tracker-and-planner/id700580184/reviews.md

## What is 5?

***Special Offer! 50% OFF for 72 hours, download now before the price goes up***
"Knowing my Personal Rest Day Calorie Intake has given me faster results" 
"The perfect companion to my 5:2 diet"

You may have wondered how we came up with the recommendation that women have 500 calories and men have 600 calories on a Fast Day. We used the rule of thumb that women need 2000 calories and men need 2400 calories per normal day and on a Fast Day you should eat a quarter of a normal day’s recommended calories.

But these normal values are just estimates, to get the maximum out of the 5:2 Fast Diet you should consume a quarter of the calories needed to maintain your particular weight. This value is different for each person because it takes into account your gender, age, weight, height & normal activity level.

Our calculator app will allow you to more accurately work out your Rest Day Calorie Intake and therefore your more accurate Fast Day intake.

## Key features

- Personalized calorie calculator
- Rest day calorie intake calculation
- Accurate fasting day intake
- Diet tracker
- Planner

## Recent user reviews (10 of 59)

All indexed reviews: https://appshunter.io/ios/app/52-fast-diet-calculator-tracker-and-planner/id700580184/reviews.md

### 1/5 — AWFUL

*2023-06-28*

Tooootallll Waste of Money. Please. I Need a REFUND.

### 1/5 — Useless don’t buy

*2023-01-30*

I wish I read the reviews before buying. I assumed wrongly that the app would have information on calorie content of foods - it doesn’t. It’s really basic and does nothing more than you can do yourself with a notes app.

### 1/5 — Awful

*2022-12-26*

Doesn’t allow you to choose your fast days. Has no features whatsoever. Total waste of money!!

### 1/5 — DO NOT PURCHASE Absolutely useless, MYFITNESSPAL is better and free

*2021-05-23*

This is purely for tracking which you can easily do in ‘MyFitnessPal’, there’s no instructions on what to do egg., how many days apart to do your fasting, recipe ideas (which are available on an additional app at an additional cost, no meal planning ideas or areas to create your own, no link to a website to even give any of this!  Shocking that Apple doesn’t quality check these

### 1/5 — Terrible app

*2020-09-13*

This is a very basic app. Would not recommend. Have to work out your own calories and enter it in.

### 1/5 — Marydee

*2019-07-24*

Sooo disappointed!  Does not do anything. I wanted my daily calories calculated! What's up with this?

### 1/5 — Waste of time and money

*2019-03-06*

Doesn’t calculate the calories for you. I have no idea how many calories was in my meal? It should have a function to work this out. Deleted as soon as I purchased!

### 1/5 — 5.2

*2018-11-20*

Useless , thought you would get the calories , had to pay but there are others free that calculate the calories

### 1/5 — Don’t Buy This

*2018-05-17*

Wish I’d read reviews before buying. Total waste of time. Won’t even convert measurements to US.

### 1/5 — Waste of money

*2018-04-03*

Do not buy this App. Is a pure waste of money. Very dissatisfied.

## Frequently asked questions about 5

### What does the 5:2 Fast Diet Calculator app do?

This app calculates your personalized calorie intake for fasting days on the 5:2 diet. It uses your gender, age, weight, height, and normal activity level to determine a more accurate fasting day calorie target than general recommendations.

### How does the app calculate my fasting day calories?

The app calculates your estimated daily calorie needs to maintain your current weight. It then determines your fasting day intake by taking a quarter of that personalized maintenance calorie value, ensuring it's tailored to your specific body and lifestyle.

### Is this app free to use?

Based on the provided information, this app is a paid application. There is no mention of free usage, subscriptions, or in-app purchases.

### Who is the 5:2 Fast Diet Calculator app for?

This app is designed for individuals who are following the 5:2 diet and want to achieve faster results by accurately calculating their personal calorie intake for fasting days.

### What are the benefits of using this app for the 5:2 diet?

By using this app, you can move beyond generic calorie recommendations and calculate a precise fasting day intake based on your unique personal metrics. This personalized approach can lead to more effective and faster results on your 5:2 diet journey.

## Version history (last 5 releases)

### 4.4 — 2017-06-28

This app has been updated by Apple to display the Apple Watch app icon.

Bug fixes

### 4.3 — 2016-06-07

Added ability to track & record historic day-to-day calorie intake

### 4.1 — 2014-11-04

Updated for iOS8

### 3.1 — 2014-04-02

Bug fixes

### 3.0 — 2014-03-27

New app icon

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*