02-15-2014, 10:26 PM
Some recording apps included in Android ROMs, in the past at least, used low sampling rates, took the microphone audio post-filtering, had no means of reducing the mic level and/or used poor quality compression. They're really just intended as digital dictaphone apps. As stated, fortunately there are 'hifi' apps out there for better quality, some record in lossless formats too.