Yes, buying installs doesn’t work, but it may have some install services can bypass Google algorithm, and Google will try to improve its algorithm again.
Ok i see. What is then with services like Admob or Appbrain … When you buy installs / advertising from them … will those installs increase ranking ?
Or will only organic installs result it better category rankings ?
When you advertise your game with admob, you get downloads from people who is interest on your app, so the retention rate is much higher, and they may recommend your app to their friends. So it will increase your ranking directly and indirectly.