It’s an iPad app called “MIDI Designer Pro 2.” https://mididesigner.com/mdp2-announce/
Note that it is quite a bit of work to setup the H9000 as shown.
The iPad is connected via USB to an iConnectivity MIDI interface which connects to the H9K. https://www.iconnectivity.com/midi-interfaces-1/
Why not share the midi designer template with the community?