Voice Recorder HD

From the App Store Source

It is a full featured best voice recorder application with stunning interface for business, audio professional, sound engineer, journalist, lecturer, school/college student and anyone else who needs to manage voice memos. "One of the most highly regarded voice recorder apps is Voice Recorder HD by eFusion." - The New York Times Key Features: ・ High quality audio recording ・ Unlimited recording time (Tested up to 21 hours) ・ Background recording (You can open other app while recording) ・ Bluetooth recording ・ Ability to configure audio quality (Low:8KHz, Medium:22.05KHz, Heigh:44.1KHz) ・ Supports any OS(Mac,Windows,Linux, etc) to playback. ・ Share voice memo by email (Up to 10MB size) ・ iCloud sync (iOS 5 and above). ・ Dropbox upload sharing. ・ AirDrop sharing between two iOS devices. ・ Restart recording after interrupt by incoming Phone Call. ・ Transfer audio files to computer(PC/Mac) using USB (iTunes require) ・ Record in mono and stereo (tested with Tascam iM2) ・ Supports external mic to record long distance sound(Tested with iRig Mic). This feature is ideal for sound engineer, vocalist and journalist. ・ Quick and simple to use ・ Universal binary (iPad and iPhone version in a single application). ・ Accessibility support for people with disabilities Extra Features (In App Purchase) ・ Audio Trimming ・ Advance PLAYBACK CONTROLS: Fast, Slow, Rewind, Forward playback buttons ・ M4A CONVERTER: Compress large HQ Audio File(.WAV) into M4A with minimum quality loss. ・ AUDIO BOOST: Very first time Voice Recorder HD is introducing "Audio Boost" feature to App Store. It is the feature to reduce noise and boost intelligibility of speakers who are very distant from the microphone or speaking very softly. You will love to open this gorgeous app every time.

Every number in these answers comes from the data shown above on this page.