Apps like USBMIDIConnect

Here are some great alternatives to USBMIDIConnect by David W Stone :
Audio Evolution Mobile Studio
Audio Evolution Mobile Studio
★4.4
FluidSynth MIDI Synthesizer
FluidSynth MIDI Synthesizer
★4.1
SoundFont-MidiPlayer-Piano
SoundFont-MidiPlayer-Piano
★4.1
Link to MIDI Bridge
Link to MIDI Bridge
★5.0
USB Midi Visualizer
USB Midi Visualizer
★3.7
Piano MIDI Bluetooth USB
Piano MIDI Bluetooth USB
★4.5
Rockrelay Synth FM
Rockrelay Synth FM
★4.1
MIDI App ( trial version )
MIDI App ( trial version )
★3.6
Melodi MIDI Controller
Melodi MIDI Controller
★3.9
Midi Sheet Music
Midi Sheet Music
★3.7
MIDI Drum
MIDI Drum
★4.3
MIDI Keyboard
MIDI Keyboard
★3.6
MIDI Controller
MIDI Controller
★3.7
MIDI Controller
MIDI Controller
★3.8
Note Teacher
Note Teacher
★4.4
MIDI Hub - Route & Edit Live
MIDI Hub - Route & Edit Live
★4.8