The best I can think of is setting up Google calendars and syncing [app]Saisuke[/app] to that. Saisuke makes copy and pasting of events fast and efficient. I haven't seen an app that is specifically made for your needs, and I have seen most of the apps that have gotten on the app store (just a few days when I didn't have Internet connection did I miss the new apps). An app like that really would be a niche product, so it probably wouldn't make a lot for the developer.