An iOS always-on sound recording app.
Records into a background buffer and provides instant replay and "start recording 5 minutes ago" functionality.
I developed this app in 2 days in summer 2012. It was on the app store first as "Say What", then as "CopWatch". It is currently not on the app store. Lots of things in this code are not good, it was a quick proof of concept.
I have removed all api keys, most third party libraries, and third party graphics, so the app will not build now. But it wouldn't take much to get it building.