It’s only available for android 4.0 and above. With the material design approach, Android L’s keyboard doesn’t have lines between the letters and it’s totally flat. I loved it’s simplicity and it’s just perfect. With 4.5 stars rating it’s got everything a smartphone keyboard should have. The gesture typing, accessing emojis and also adding different dictionaries.
You may find it a bit unusual at first, but, then you’ll never think of uninstalling it. You can get it on the play store. Link’s given below. The app will guide you through, making it your default keyboard. It’s just too good.