Is there a similar app to Ring Scheduler available for the iPhone?

Question

Hi,
I currently use a Droid, and I am NOT happy with it overall.  However, the reason I chose a Droid over the iPhone is because of one application not available for the iPhone, but available for Droids.  That application is "Ring Scheduler."  (RS)  With RS you can select times at which your phone's ringer will automatically silence itself.  Additionally and MOST importantely, you can add contacts to an exceptions list so that when these contacts call during silence time the phone will ring.
For example, I have my silence times set from 10:00 p.m. to 6:30 a.m.  I have my parents in the exceptions list, so if they call at 2:00 a.m. with an emergency, my phone will ring.  My buddy John, however, who may drunk dial me at 3:00 a.m. will not wake me since the phone is silenced and he is not on the exceptions list.  I also own a business with 70+ employees who tend to call at any hour of the day/night.  I don't need to be woken up at 2:30 a.m. from John Doe who is calling out for the day, but if my aunt has an emergency, since she is on the exceptions list, the phone will ring.
Is there a functionality within the phone, or is there a similar application avaialble for the iPhone?  I have asked at the Verizon dealers, but I've never gotten a straight answer.  My Droid is nearing its end and I'd like to replace with an iPhone, but because my family is older and I have numerous people who call at any hour I NEED this application.  Please advise!
Thanks in advance!

Answer 1

It will be baked into iOS 6 when it's released this fall.
http://www.apple.com/ios/ios6/#phone
It's called "Do Not Disturb".
3rd party apps don't have access to the functions necessary to do this.