The Mini-V Controller is the latest 4LittleFonzies iPad controller. It controls the Arturia Mini-V virtual instrument like you're turning the knobs on real hardware. No fiddling on the screen with your mouse; just control the Mini V while you're performing on the keyboard.

Short demo video: http://youtu.be/kZpIic_IorA

It uses the wireless MIDI possibilities of the IOS CoreAudio framework.
On the VST side, the wireless MIDI is enabled with:
OSX -> Build-in Wireless MIDI
Windows -> rptMIDI (http://www.tobias-erichsen.de/rtpMIDI.html)

To start using the app, the Arturia Mini-V application needs to learn all MIDI controller messages.
This can be done by enabling the MIDI learn option. Then, after selecting a knob in de Mini-V it will recognize the incoming messages. Note, these messages are all NRPN messages.
Als have a look at the manual of the Arturia Mini-V and your OSX and/or Windows manual.

Keep turning those knobs!!!!!