AutoSilent has been updated for iOS 4 now, it's working fine on the iPhone 4. One catch though, do NOT update if you are running 3.x, the update is iOS 4 only. Sort of a drag, hopefully the old version is available for people that need it, but it's better than making it a different app and making people pay again.
I haven't used calendar pro or whatever that other app is called, but I would think this is easier to use because you don't have to go to another app to set times.
I haven't used calendar pro or whatever that other app is called, but I would think this is easier to use because you don't have to go to another app to set times.