Stopping my game to ask me to upgrade – Words With Friends Classic Review

Really enjoy this game but may stop playing and uninstall if you don’t stop constantly trying to get me to “upgrade” to a different game. The advertisement pops up in the middle of my screen, and the only way to get rid of it is to click on “okay”, which goes to the App Store.
Review by Thatnameistaken44 on Words With Friends Classic.