Instant Audio Recorder - A full functional audio recorder with audio-tweet function. Tweets audio fragments up to 100Mb!!
Quick Record - Voice memos audio recorder with iCloud sync
Recordium - Recordium is a powerful yet elegant recording app designed for iPhone, iPad, and iPod Touch.
Skyro - A gorgeous voice recording app with embedded images
Moo0 Voice Recorder - Moo0 Voice Recorder is a very simple sound recorder.
Audio Memos - Audio Memos is a voice recorder for the iPhone and iPad.