This app will clear your Keyboard Cache. This will help you in case you have problems with your keyboard.
EXAMPLE: Sometimes when you have RetinaPad installed you have a crashed keyboard in iPhone apps on iPad (as it was for me in symbols section)
OR
If you messed up with Emoji 2 your keyboard may have some issues.
DON`T INSTALL THIS IF YOU HAVE NO PROBLEMS WITH YOUR KEYBOARD! (well you may, but nothing will happen)
This app will not do any harm to your device. You can try it, because clearing the cache also speeds up, fixes. When it is run it will restart your homescreen.
Thanks to @moeseth , who shared me the Keyboard Cache Directory!