As someone who is kind of awful at geography I think this is pretty great. Kind of a Duo Lingo for countries of the world. However, I found the population ones

As someone who is kind of awful at geography I think this is pretty great. Kind of a Duo Lingo for countries of the world. However, I found the population ones frustrating because there were multiple answers kind of in the same ballpark. For example, I think it makes sense to teach people a country of 20 million vs a country of 100 million but 57,100,000 vs 57,200,000 is a bit of a trick question to me. Also, when I did get questions wrong I found the app very unhelpful to correct me. As others have stated, those info boxes are much more useful after a wrong answer than a right one. Most of the ones I got wrong was a guessing game to randomly pick something.