Ive used a few field recording apps, and so far this is the best Ive found. Easy recording. Easy sharing. Easy editing. Easy conversion into MP3 and other major formats. Its all very intuitive and accessible.
Also, this app lets you disable the iOS microphone processing, which is *very* important, if you want to make an excellent recording. With the processing, theres background noise inbetween sounds. Without the processing, its an excellent recorder -- shockingly good for a piece of consumer electronics that fits into your pocket!
PhotoFanatic about TwistedWave Audio Editor