Channels or Channels DVR on iOS?

Ok, pretty sure this is a dumb question but....
Why are there two apps for iOS, i.e. is there any difference between the 'Channels' app and the 'Channels DVR' app?

The apps are exactly the same. One used to be paid and the other was free for DVR subscribers.

Hi, thanks for quick response.
I thought that was probably the case - just wanted to be sure!