Works fine on my HTC-One. The keyboard switching that many users complain happen to me also  but there is a work-around - you will need to disable other native keyboards. You do this by going to SETTINGS > KEYBOARDS > CURRENT KEYBOARD > CHOOSE KEYBOARDS > Disable all other keyboards except INDIC KEYBOARD This should take care of the problem. Actually my main concern is - why does the app request so many permissions incl contacts  passwords  etc?
August 02 2015