OPEN CAMRA (Mark Harman) I was searching for such an app because my stock camera records vedios with low voice. But this app provides to use different options to choose audio source and I found excellent recording of vedio with CLEAR AUDIO in three options like 'default  ext.mic and voice optimised. By using option of Camcorder for audio source recording is nt good because audio gets weak. It is proved that this app is excellent beyond any doubt and the best part as appreciated by all is that it is add free. Thank you.
October 20 2016