Add non-realtime audio buffering
Currently the speaker output rarely works live due to lack of processor power. Maybe the audio could be buffered into memory or streamed into a wav/aiff/mp3 file or better yet, into audio clipboard (the free AudioCopy SDK by Retronyms has been a de-facto standard for years, but maybe regular iOS clipboard would suffice too)
This is a great idea!
I'm not a developer but what if iCircuit utilized the same foundation that DAW programs use for audio routing? Core audio (Mac) and ASIO (Windows) help alleviate some of the issues with popping/glitching audio streams. Even better, using Core Audio/ASIO means iCircuit could route directly to VST plugins (Scope, FFT, etc.).