Roman Numerals Converter is a free android app that allows you to convert regular numbers into Roman numerals quickly in real time. If you are learning to convert numbers into Roman numerals, or are needing to convert them the other way this app is for you.
What surprised me most was the integration with google talk to be able to speak the number that you want to convert. This feature sets this app out from the rest which makes it fun as well as educational for children.
The app has a good clean layout with easy to follow navigation throughout the app and very unobtrusive ads.