ads after every lesson you finish is really not gonna make anybody happy, buy the premium to remove ads like bruh hell naw, there is lots of problems in every language i tried, !some things just really doesn't make any sense and people gonna think that is how it is suppose to be so its just false information!, on top of it you want people to buy premium version of this?, i could just download any random app for a specific language and it would be much better. BE AWARE OF FALSE INFO!