To connect your instrument to your iPhone, you can use the following:
MIDI via cable connection
To connect with a cable, you will need:
USB to USB-B cable or IN-OUT MIDI/USB cable (check your piano's outputs)
Your setup will look something like this:
Step 1: Connect the Lightning to USB Camera adapter to your iPhone's lightning port:
Step 2: Plug the USB A end of the USB or MIDI/USB cable into the Lightning to USB Camera adapter:
Step 3: If your piano has a USB-B port (often labeled "TO HOST"), plug the USB-B end of the USB to USB-B cable into it. You need a USB 2.0 cable for this. If your piano has a 5-pin MIDI output, plug the IN and OUT ends of the cable into it.
That's it! Open flowkey and play away with a flawless recognition of notes!
MIDI via Bluetooth
To connect with Bluetooth, you will need:
iOS app
MIDI Bluetooth adapter
Your setup will look something like this:
Step 1: Connect your MIDI Bluetooth adapter to your keyboard. Depending on the outputs of your keyboard, you will need either a 5-pin MIDI adapter.
Step 2: Turn on Bluetooth from your iPhone's Control Center by swiping down from the top-right corner of your screen and tapping on the Bluetooth icon. If you have an older iPhone, you can access the Control Center by swiping up from the bottom edge of the screen. (All of this can also be done under Settings > Bluetooth.)
Step 3: Open the flowkey app. In the player, tap on the "Settings" symbol (⚙) in the top right corner, select "MIDI / Bluetooth Setup" and then "Configure Bluetooth MIDI" to find your MIDI device. You also have the option to enable MIDI sounds here if your instrument doesn't produce sound.
That's it! Your device will connect and start communicating with your instrument via MIDI and you'll enjoy much smoother note recognition through the wireless connection.