What type of audio recording are you looking for? Internal mic or an external one? (or a call recorder?)
This one is great (esp since its free)
This android would help keep your experience flow, you can set it to "skip silence", so what you do is plug it into the wall and have it recording the whole time, then you just speak whenever you think of something, instead of having to fiddle with technology.
Makes it much easier when you want to listen to it later, no big gaps of silence.
Do you have an android phone? Try "Smart Voice Recorder" for android.
You can hit record and have it 'skip silence', that way you can just have it run and talk whenever you want.
The finished recording doesn't have any big gaps of silence, it only recorded you speaking.