I have nearly completed a Lua Class that allows to create a Ratings Dialog and that works on some parameters set by you the developer. It allows for Number of uses, checks if the user has declined to rate, and if the app is now replaced with a newer version, it will reset the values and check again as if it was a new app.
here’s a small article explaining it in probably more detail
http://howto.oz-apps.com/2011/03/launch-rating-dialog-in-game.html
Hope this is helpful in your app development attempts,
cheers,
Jayant C Varma [import]uid: 3826 topic_id: 7663 reply_id: 307663[/import]