Call Duration Notification в Android Market

Call Duration Notification (v. 1.0) Разработано Alberto Manzaneque

“Call Duration Notification” makes the phone vibrate when your outgoing calls exceed the specified time. There is also an option to auto hang-up the call.

It's perfect if your call rate includes the first minutes of each call for free, to remind you when you are over the limit. Also useful if you just want to have control over you call time.