Is there a way to sleep your mac through iPhone/iPad? In the remote that comes with Apple TV, if you pair it with a mac, you'd be able to press and hold the play/pause button and your mac will go to sleep. Is there a way to do the same with iPhone/iPad Remote app?
If you just need the sleep/wake function, you may want to take a look at iNet WOL, which does a great job. It's the little brother of iNet Pro, a much more extensive network tool for the iPhone.