So... some lame human took my Apache 2 licensed "Cat Avatar Generator" app (https://play.google.com/store/apps/details?id=com.agateau.catgenerator …), added ads to it and put it on Google Play (https://play.google.com/store/apps/details?id=com.swagselfie.catgenerator&rdid=com.swagselfie.catgenerator …). While AFAIK this is not a license violation, it is of very poor taste...
Thanks to Poussinou for pointing this out: https://github.com/agateau/cat-avatar-generator-app/issues/7
@steckerhalter, yes, that's why I made the core of the game I am working on (Pixel Wheels) GPLv3, but reusable components Apache 2.0.
Having said that, GPL only makes those kinds of steal illegal, it does not prevent them. But at least I could have requested Google to take it down.