What is the best iPad app to use with remote control editor?

It’s a long time that I want to use the RCE in cubase 7.5, but I have no hardware controller that supports mackie mcu protocol yet, I wonder if there is an iPad app that could do that to experiment with RCE as I’m not sure how the all concept of RCE and plugin works. I have midi designer app and cubase ic pro but I think they don’t support RCE and MCU.
If there is a controller app that receives plugins control names and function controller layout it should be great.
Any recommendations.?
Thanks in advance.