Myself and XDA member Scary.Alien recently released an Android app that allows you to ignore a call while busy in such situations as driving, in a meeting, etc. but without ignoring the person. The app is quite simple and sends a text to someone if you have the app enabled while receiving a call. The app is currently pretty simple but we plan some bigger features down the road such as:
AwayMessage is available for free to XDA members by going to the development thread and $0.99 on the App Market. If you have any feedback or bugs post in the discussion thread.
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