It has bugs but mostly it works. In exercises where you need to select words in correct order to make a sentence it keeps selecting and deselecting them so you need to press enter at the right moment, also rarely (but it happens) it selects a wrong word and you have to switch to keyboard input and type the whole sentence yourself. Exercise where you need to fill the gaps isn't supported. It's a cheap way of getting those very hard to get achievements but it does diminish the whole experience a lot.
It has bugs but mostly it works. In exercises where you need to select words in correct order to make a sentence it keeps selecting and deselecting them so you need to press enter at the right moment, also rarely (but it happens) it selects a wrong word and you have to switch to keyboard input and type the whole sentence yourself. Exercise where you need to fill the gaps isn't supported. It's a cheap way of getting those very hard to get achievements but it does diminish the whole experience a lot.