Auto volume setting?

[TimVFR]

I would like to see an app, or add-on that will allow setting the ring tone volume based on the time of day. Loud during the day, and off late nights.

[shivsey]

Just curious if this idea has been implemented, anyone know? Basically I want my alarm (the "Alarm Clock" app) to sound regardless of what volume it had been set at the night before.