Fixing Echo – Acapella Maker -Video Collage Review

Hello! At first when I got this app I was skeptical; there was an echo when ever I recorded a video! It was SO annoying cause it made the other videos off beat and ruined the whole video. I did make some funny videos to laugh at but none that are actually good. I'm experimenting to find a way to make it stop echoing. Please fix!!
Review by K.c undercover lover on Acapella Maker -Video Collage.