Intrigued by the title, I downloaded Milkmaid of the Milky Way on somewhat of a whim, not sure what to expect. The premise seemed odd enough to be fun, but also conceptual enough to be a disaster. Luckily, it was the former.
Kids are always learning, grabbing, and playing with things, and chances are this includes your iPhone and iPad. There's plenty of games on the App Store that can help your kids learn or keep them entertained.