# Convert Units App

> Free unit conversion app with custom options and real-time currency exchange. (iPhone/iPad app by John Temple Group Pty Ltd..)

- Source: https://appshunter.io/ios/app/convert-units-app/id337224035 (this page in markdown: same URL + `.md`)
- Developer: [John Temple Group Pty Ltd.](https://appshunter.io/developer/317856073)
- Category: Utilities, Reference
- Price: Free
- Rating: 3.01/5 from 1,454 App Store ratings · 50 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 26 MB
- Languages: English
- Released: 2009-11-04
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/convert-units-app/id337224035/reviews.md

## What is Convert Units App?

Convert Units for Free is the #1 Unit Conversion App on the App Store since 2009 with over 24 million users to date.

Download the most Intuitive, Powerful and Essential Conversion App you will ever own.

     **NEW** Save your favourite conversions for instant recall.

Convert anything easily. This free (yes, FREE) application lets you convert area, angles, currency, data, density, energy, force, length, mass, mileage, power, pressure, speed, temperature, time, volume, volume flow and more...

Custom Conversions - You can even create your own unit conversions for anything you want, quickly and easily. 

Download the only app with custom conversions and real time currency conversions that are updated live! 

Convert Units for Free is an essential tool that you’ll love and use everyday.

***** 
"(…) this app is amazingly versatile and user friendly. Unbelievable that it's free. Converts dozens of measurements and types and does so easily for those of us with no mathematical abilities whatsoever. The customizableness (there's a word...!) makes conversions fluid, understandable and remarkably convenient and easy to input. Can't say enough nice things about this app. Thank you for this much needed and often used tool.” 
-Adam Schramm   

***** 
"I would fail geometry without this!" 
-Aroga 

It doesn’t matter whether you’re a physics student, a cyclist or a plumber, you have conversions to make. You could use a pen and paper or dig out a calculator but why would you? It’s not necessary now that you have Convert Units for Free. 

Why tax your brain when you can get conversions in mere seconds, right on your iPhone, iPod Touch or iPad. Need to convert an area or an angle? Want to figure out speed, force or volume? No problem. Convert Units can handle whatever you throw at it and best of all, it won’t cost you a cent. Not now, not ever. 

Convert Units for Free is not only powerfully capable, it is also the one and only app offering custom unit conversions. It comes with 13 ready-made categories containing hundreds of conversions for you to use but if you don’t see what you need, just create a new one! 

Here are the included categories that are all set up and ready for you: 

* Angle
* Area
* Currency* Data
* Energy
* Force
* Length
* Mass
* Power
* Pressure
* Speed
* Temperature
* Time
* Volume 

Think an app that can do all this is hard to use? Nope, it’s as easy, user-friendly and intuitive as it possibly can be. You don’t need a degree to be able to take full advantage of Convert Units for Free. 

Just check out some of the features! 

* User-friendly, extremely intuitive interface 
* 17 ready to go categories with hundreds of unit conversions 
* Real time currency conversions updated live
* Slidable keypad for larger scroll wheel display
* Unit categories can be sorted and turned on/off
* Allows you to easily create your own custom conversions 
* Copy and paste functionality 
* Is and always will be 100% free 

Come and find out why over 35 million users are already making Convert Units for Free part of their everyday lives. Download this unique, one-of-a-kind application for yourself. It doesn’t cost you anything and may quickly become your most indispensable tool. 

Free the Apps! brings you the quality of paid apps for free. We have registered over 58 million total downloads. Your continued support allows us to bring you more updates and apps for free. If you haven't gotten a chance to try out our other top free apps, check them out and spread the word! Thanks! :D 

freetheapps.com 
facebook.com/freetheapps 
twitter.com/freetheapps

## Key features

- Hundreds of unit conversions
- Custom conversion creation
- Real-time currency exchange
- Intuitive user interface
- 17 ready-made categories
- Save favorite conversions

## What do users think of Convert Units App?

Overall sentiment: negative

**Pros**

- 🚀 Fast and intuitive
- 💡 Extensive unit conversion options
- 👍 Convenient and useful app

**Cons**

- 🐛 App crashes or won't open
- 🔧 Compatibility issues with recent iOS updates
- 📉 App no longer functioning as expected

**Commonly reported bugs**

- App crashes on launch
- Conversion values not displaying correctly
- Custom conversions not working

**Most requested features**

- More conversion options (e.g. engineering units)
- Customizable display settings
- Inflation calculation feature

## Recent user reviews (10 of 50)

All indexed reviews: https://appshunter.io/ios/app/convert-units-app/id337224035/reviews.md

### 1/5 — Was good at one point…

*2022-11-29, version 7.6*

I first downloaded this app years ago and I used it almost daily. It was great back then when it was working. Recently, after the latest Apple iOS updates, the app is broken and it will not open. I get a brief flash of the app graphic as it attempts to start and then it crashes. I tried uninstalling and reinstalling the app but did not fix the issue. If you are using the latest Apple iOS beware; the app will not work.

### 1/5 — This App no longer works

*2022-06-12, version 7.6*

It keeps crashing when I open it. So far it has not worked and the last update is over 3 years ago! I am using iOS 15.6 and if this app hasn’t been updated in 3 years it won’t work for anyone with at least iOS 13 or higher.
Stay away until the developer updates it to work with iOS 15 or higher.
I now use Unit Convertor as it still works the way it is supposed to.
Apple why don’t you make a standard app for converting units? It could even be incorporated into the calculator app.

### 1/5 — Doesn’t work any longer

*2021-08-26, version 7.6*

I used to use this app quite a bit but it won’t launch any longer. It hasn’t worked in ages. The splash screen shows and the app just goes away. It still shows as running if you double click the home button but it won’t work. I could understand it for a short while but it’s been going on for too long. The app seems abandoned.

### 5/5 — Please help!

*2021-06-11, version 7.6*

I’ve used this app for years and really depend on it for convenience. It was fast, easy and intuitive. I don’t need a complex app with fancy features. 
After the last few Apple updates it will not come up. 

Please fix it!  Thank you

### 4/5 — Suddenly crashing

*2021-04-21, version 7.6*

I’ve been using this app for years and it’s been good. Tried using it today and all of the sudden it just crashes. I tried deleting and reloading but it crashed again.

### 3/5 — IOS 14.4 issues

*2021-03-05, version 7.6*

I have been using this app for ages and I enjoy its simplicity and accuracy. But since I’ve upgraded to iPhone 12, the app seems corrupted and is not able to even open. I have tried to delete and reinstall it several times without success. I hope the issue will be fixed soon.

### 1/5 — Good if it worked

*2021-02-18, version 7.6*

I’ve used this app on and off for several years but in the last years the app crashes and won’t even open. 
I have deleted and reinstalled it twice and the same issue remains!! 
I don’t know if the developers have abandoned the app to keep up with os changes but he last update was a year ago. 
Too bad, it worked pretty well back when it actually worked!!!

### 4/5 — App Issues

*2021-01-24, version 7.6*

I have used this app for years and love it, but over the past year, it no longer opens. I thought it might have been because I had to old a phone, but even after a phone update, it still won’t open. Please fix the issue.

### 2/5 — No longer remember the last time this app worked

*2021-01-09, version 7.6*

I encounter the same issue many others describe here - the app launches with a splash or start-up screen and then sends one back to the device home screen. Trying to toggle to it in the list of background apps runs into the same problem. It was my go-to app for conversions for years, possibly close to a decade, and I remember it kept on improving with more conversion options, but very unfortunately I no longer recall the last time I was able to use the app stably.

### 4/5 — Not working at all today

*2020-12-28, version 7.6*

I’ve had this app on all of my apple devices since my Iphone 3.  It has worked flawlessly until today.  I tried several times to get it to work today on my iphone 11.  It worked fine until today.  It won’t even turn on.  The intro panel comes on and stays on for about 5-8 seconds and then nothing.  It shuts down and goes silent.  What gives?

## Frequently asked questions about Convert Units App

### What does the Convert Units App do?

The Convert Units App is a comprehensive tool for converting between a vast array of units across numerous categories. It simplifies complex calculations, allowing users to quickly find equivalent values for measurements like length, mass, temperature, currency, and more. The app is designed to be user-friendly and accessible for everyone.

### What are the key features of this unit conversion app?

Key features include access to hundreds of pre-defined unit conversions across 17 categories, the ability to create custom unit conversions tailored to specific needs, and real-time currency conversions that are updated live. It also boasts an intuitive interface, the option to save favorite conversions, and a slidable keypad for ease of use.

### Is this app free to use?

Yes, this application is completely free to download and use. The developers explicitly state that it is and always will be 100% free, with no hidden costs or charges. This includes all of its conversion capabilities and custom features.

### What devices is the Convert Units App compatible with?

The app is designed for Apple devices, specifically mentioning compatibility with iPhone, iPod Touch, and iPad. It is available on the App Store, indicating it runs on iOS operating systems.

### Who would benefit from using this app?

This app is beneficial for a wide range of users, including physics students, cyclists, plumbers, and anyone who frequently needs to perform conversions. Its versatility and ease of use make it an essential tool for everyday tasks, academic studies, and professional work where measurements and conversions are common.

## Version history (last 1 release)

### 7.6 — 2019-05-24

Updating to conversions based on user feedback, minor changes and bug fixes.
Real-Time live currency conversions are back!!

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All apps by John Temple Group Pty Ltd.: https://appshunter.io/developer/317856073

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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.*