OK- here's what I did: 1) Downloaded the free trial of Sparrow 2) Liked the free trial of Sparrow 3) Took advantage of the half-price offer: http://www.tuaw.com/2012/07/13/mac-versions-of-sparrow-and-fx-studio-pro-discounted-today-to-4/ 4) Downloaded from the App Store 5) Opened Sparrow- still got ads? 6) Figured I needed to uninstall and reinstall to get the paid version: Now it says "Installed" on the App Store. I've tried AppCleaner and ejected my Time Machine drive (this can be a problem, apparently) But the App Store just says "Installed". If I try to get it direct from the Sparrow website it asks for the full price. What can one do?