Horrible app. I got it as a refresher, and there are a lot of flaws. First, it directly translates English to German. If you say "I'm sorry" the way the app does, germans will think whatever happened acctually makes you sad. Also, Germans don't say "Ich mag ___" (I like ___) they say "___ glaubt mich" (___ pleases me). Last, it is just random vocabulary, that you don't know how to use. "Ich adfahren gestern" is not how you would say I arrived yesterday, it is "Ich bin gestern abgefahren," but since there is no actual teaching in this app, nobody would know that. I've only taken a year of German and I saw this in 5 minutes.