vKiP requires a CoreMIDI compatible iOS USB MIDI interface. However some iOS USB MIDI interfaces have issues handling MIDI SYSEX data. The native Kyma MIDI control surface support that vKiP uses requires the use of SYSEX messages in both directions. These messages are primarily used for LCD updates so the SYSEX traffic load is not too demanding, except for when a parameter value is displayed and is being actively updated.
A few iPad MIDI interfaces have reportedly suffered from overall SYSEX compatibility issues. This has been reported as an issue by owners of the Alesis IO Dock (see Alesis 10 Dock SYSEX compatibility
). We have not tested the IO Dock so we cannot confirm this alleged problem. If you are considering an IO Dock we recommend you contact Alesis directly to determine what the current status is. In general we recommend confirming full MIDI support for any iOS MIDI interface by testing it with the apps you wish to use before investing in it.