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a2z Pro (Unit Converter)

By Western ITS Limited

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a2z Pro is the free community driven units converter (with no ads!).

The new a2z Pro allows you to convert between hundreds of different units or add your own categories for units that are not already included in the application.

Once you have created that category, you add the units (and their relevant conversion formulas) and then you can upload it to our server. That way, fellow a2z Pro users can browse the online catalog of categories and download a conversion category that is of use to them.

The process of creating your own category is straight forward, but you will need knowledge about that category in order to make it accurate and worthy of sharing.

We will of course check all units uploaded to our server and approve them before making them available for others to download. To make things more interesting, we've included an icon set of 240 Apple friendly icons to choose from for your own category. Your name will be added to the category and you will be able to see how many people have downloaded it and benefited from your contribution.


- ability to add/remove and download new units.

- 2 different ways of displaying the conversions (more coming soon).

- currency conversion for more than 150 different currencies.

- active community constantly writing new conversions for the app.

What's New in Version 2.2.1

Thank you for all your feedback and feature requests. Please continue to report any bugs or suggestions using the feedback form in the app. If you have found this app useful please take a second to rate it on the AppStore.

- added a different way (theme) to convert the units using direct input (go to Options > Settings in the app to choose which you would like to use).

- ability to choose the default value for the categories.

- auto rounding of numbers to show more or less decimal places depending on the conversion.

- last selected currency is now remembered.

- added a clear button to the input fields.

- auto cleaning and refining of categories to make sure there is no corrupt data in the app.

- ability to delete unwanted currencies and arrange them.

- some stability issues fixed.

- all your custom categories will not be lost. If you are worried about losing them backup your phone on iTunes or upload your custom categories to our servers using the upload option.

iPhone Screenshot

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Customer Reviews


As others have mentioned, the weight chart on this app is wrong. We were convinced the midwife who delivered our baby had got the weight wrong so I used this app to check. We've been telling everyone what we thought was the correct weight. However, having now used other conversion charts, this app is quite clearly wrong. The midwife was right.

Free? Amazing!

I have never seen a more useful free app. Easy to use and don't listen to those who says it needs improving. Just BUY it......well it's free so
just GET it

Weight converter WRONG

Used this app for years but only just realised the WEIGHT converter for POUNDS - STONES & vice versa is WRONG. It's about 3lbs out on some conversions so quite a big difference. Reluctant to use rest of app now as I don't trust it.

a2z Pro (Unit Converter)
View In iTunes
  • £0.79
  • Category: Utilities
  • Updated:
  • Version: 2.2.1
  • Size: 1.4 MB
  • Language: English
  • Developer:

Compatibility: Requires iOS 3.1.3 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
All Versions: