This Simple Grey Theme is designed for Android smartphones and tablets. It allows you to choose from different themes, which are built into the keyboard. You can also change the font and background, as well as the sound. This is built in such a way that it will look exactly the same, no matter what theme you choose. 

It supports over 150 languages, including English, Arabic, Croatian, Czech, Dutch, French, German, Greek, Indonesian, Italian, Malay, Filipino, Polish, Portuguese, and Romanian. It also supports phonetic keyboards, so you can write in the language of your choice. 

It is very easy to use and has a beautiful and clean user interface.