Sonuus, maker of Guitar to MIDI hardware, has released a Universal iOS app that gives you all the same functionality in app form. Their hardware units are around $100, so this is a pretty nice deal as a $2 app! The price goes up to $10 next month.
The Sonuus G2M - Universal Guitar-to-MIDI Converter app delivers high-performance, low-latency, MIDI conversion for guitar (and other musical instruments). Featuring the same pitch-to-MIDI technology used in Sonuus' acclaimed hardware products, the G2M app gives you an easy, low-cost way to enter the world of MIDI guitar.
This G2M app gives you access to the same technology of the Sonuus hardware G2M:
- Any electric guitar can be used as a solo MIDI guitar: i.e., it's universal.
- No guitar modifications or special pickups required.
- Robust note detection — minimises wrong notes.
- Velocity detection of notes, so your playing dynamics are translated into MIDI messages.
- Fast, accurate pitch-bend determination, or alternative chromatic mode.
- Very low latency & very fast tracking.
- Built-in, precise tuner.
These features combine to do something that no other MIDI converters can do: accurately capture the musicality and phrasing of what you are playing. Whether you want to lay down a MIDI bass line, or a saxophone solo, the G2M ensures the musical nuances of what you play are retained.
Sonuus put together a nice little demo of how the app works, including a demo of it sending WiFi MIDI.