What I actually want is the ability to control everything in the home theater, like the better Logitech controllers do (we have a Logitech 650 which is super handy): cable box, tv, PS3, HDMI switchbox, etc.
To be honest I was hoping that Logitech itself would write an app for Android, but with so few phones or tablets having IR blasters I can't imagine they're in any big rush about it.
Peel makes this as well as other TV apps. I sent their help desk an email asking if there would ever be an S4 version of the "Peel Smart Remote" which I think does most of what I'd like. So we'll see.