Well Animoog seem to have patched the problem with crashes from the 1.1 release, but the MIDI out option is still a IAP. I expect that the iPhone version will follow soon.
@iDesignSound asks if the audio engine behind Tabletop and Rebirth are infact the same:
“A quick comparison of Retronyms TableTop TT-303 and Propellerheads ReBirth on the iPad. They sound like the same synth engine to me 😉 What do you think?”