""TASCAM PCM Recorder is a free stereo recorder for iOS devices. It supports up to 12 hours of recording, using the built-in microphone or connected USB devices like the TASCAM iM2 stereo microphone. EQ, limiting, Soundcloud support and more make this a full-featured professional recorder.""
"iRig PRE is the first high-quality microphone preamp designed specifically for iOS devices that allows musicians to use their favorite high-quality stage or studio mics with their iOS device."
"Rockmate is a breakthrough music creation app. It turns your iPad into a complete music studio easy and super fun to use.
You can compose, record and play songs with up to 4 Rock players on one single iPad. Rockmate is easy to play with smart chords progressions, sounds great with separated guitar effects and in-house produced audio samples and is also fully customizable with multiple drums and keyboard styles."