Applies to Circuit Tracks
To use the Circuit Tracks with an iOS device you will need an Apple Lightning to USB 3 Camera Adapter, which is available here.
Crucially, this adapter features an additional lightning port for you to connect a charger to charge your iOS device simultaneously. This will also supply additional power to the USB port and this is required to use your Circuit Tracks with the iOS device. Note that iPad Pros with USB C ports can be connected directly to Circuit Tracks with a USB C to C cable.
First. connect the adapter to the iPad, then connect the charging cable to the lightning port.
Finally, connect Circuit Tracks to the USB port of the adapter and power your Circuit Tracks.
Using an Apple brand adapter is required, third party adapters are not supported and are widely reported to not work.
Once connected, your Circuit Tracks will send MIDI to apps that support MIDI.