I also recommend Chunky. I have an old 4th Gen Ipad and it works wonderfully. The free version provides everything you need, but I loved it so much I shelled out a couple of extra bucks for the full version. I can only imagine how well it would work on an Ipad Pro.
whiteknight67 wrote:Yacreader (yet another comic reader) is the best.
Looks like good reviews on the iOS app store.
I downloaded the Mac version, I'm surprised (since they are registered) they don't sign it as a registered developer (I'd have to lower the security settings to the lowest to allow it to run, I've never had to do that before....). Or put it in the Mac App store and sell it...