Apollo MIDI over Bluetooth provides MIDI connections for controllers, synthesizers, and sequencers, connecting a pair of iOS devices, or an iOS device and a Mac.
The Mac version of Apollo should be available shortly.
We are waiting for approval from Apple for the OSX version (which will be free). In the mean time, you can download this version. Once the OSX version is released, we would encourage you to download the one from the Mac app store (this will make updating the app much easier).
Connecting synthesizers and sequencers across multiple iOS devices has been challenging, and there have been few options. For wired connections, you need multiple MIDI adapters (either dedicated iOS devices, or a Camera Connection Kit and generic USB MIDI). WiFi MIDI can have too much latency and jitter, making it unusable for music applications.
With Apollo MIDI over Bluetooth, you can easily connect a pair of iOS devices, or an iOS device and a Mac, using Bluetooth LE. Bluetooth LE is designed for low latency — ideal for music applications.
Simply start the app on each device, select an “A” endpoint for one, and a “B” endpoint for the other, and then press search on both devices. They should detect each other, and connect quickly. Once they are connected, MIDI from one device will be sent to the other — the connection is bi-directional. On each device, you can select the MIDI destinations that you wish to forward messages to.
When connecting to a Mac, select the “A” endpoint for the iOS device; the Mac will be a “B” endpoint. Just as with the iOS set-up, press search on both devices, and they should connect quickly. With MIDI routing on a Mac, there is a danger of creating a loop in the routing (where MIDI messages get sent and relayed repeatedly). To avoid this problem, Apollo on the Mac either sends MIDI from iOS to the Mac, or vice versa — make sure that you toggle on the direction you need.
The apps require Bluetooth LE — this is available on the iPad3, iPad4, iPad Air, and iPad Mini. iPhones starting with the iPhone4S support Bluetooth LE. Newer Macs also support Bluetooth LE; older Macs may require a USB Bluetooth LE adapter (we have had good luck with the adapters from IO Gear and Ciraco).
Apollo has been designed to be simple to install and configure, and it should expand your MIDI capabilities easily.