I'm not sure if it is a personal thing, but I would like to have an idea of your pricing before trying your app, and it was not clear from the web page.
This one might be subjective, but I've lived in Japan a couple of years and it is quite rare to hear somebody saying 見ましょう in the context of your example. I get the point is to teach the grammar, but if you claim your app lead people to fluency, there might be better examples to show up in your screenshots. Maybe I'm not the target customer, but I get the feeling I'll be learning more for passing the jlpt tests and less for the real world.