Akai MPK mini to control Organelle and iPad

Hi, how may I connect a midi controller with usb output (akai mpk mini) to control both organelle and iPad? As far as I know it is possible to decide which one to play just by changing midi channel from the akai, but all the solutions I have seen, require the use of midi cables and midi host, I have the Roland UM-ONE mk2 and a Camera Connection Kit for the iPad already, any suggestion?

Maybe I could connect them using a iConnectivity midi host?