Moog Music has released Animoog v2. This updated iOS app offers many user-requested features, including an available 4-track recorder and the ability to import audio tracks. You can also import tracks and record/loop multiple layers of synthesizer within the app. Finish up by directly uploading to Soundcloud or sharing with Apple file sharing.
You can read more about this app update here: http://musicindustrynewswire.com/animoog-v2-with-4-track-recorder-announced-by-moog-music/