take out adds within an APK

Anyone tried this, seems to take out the ads in APKs

https://www.youtube.com/watch?v=Jw7LLISPcdY

Just looked two apps Hill Climb Racing 2 and Terrarium TV and neither of them had a "pub" in the file he points to, shame I fancied a drink :D

There's a adfree version in the downloads section