Ads totally inappropriate for children – Grand Piano Keyboard&Metronome Review

My children like playing this app, but one of the ads was very disturbing and inappropriate. And there wasn't a way to take it off. Just a picture right in the middle of the screen of a woman taking a bath with her elbow showing to make it look like her breast. And it was very realistic looking! I don't want my children having these images thrown in their face when I'm thinking they're just practicing piano songs!
Review by Barbalona on Grand Piano Keyboard&Metronome.