This app let’s you hand-write on you device just like you write on you normal paper, with support for over 80 languages. It supports normal and cursive writing irrespective of whether you use a stylus or not. One cool thing, you can also draw emojis using this app. See screenshot.
It works on all Android devices from version 4.0 upwards and would really help in typing certain languages that were more difficult on standard keyboards. Download it from Google Play Store here
Or you can grab the apk here.