I was thinking about an application like a Voice Notes app that records what you say in the iPhone microphone. It could also try to discover (via Bonjour) a Speech Recognition service on your home network (hosted on your home mac/pc) that could convert your recorded audio in text format and send it back to the Voice Notes app, ready to be associated with the recorded audio to make it easy to do a keyword search on your voice notes. I think the Voice Notes app already exists… I have found something from erica sadun…