No Sound!!! Garbage!!!

When I had this for my ipod touch I loved it because the video was good and had sound. However, when I used this for my iphone 4 there was no sound. Very annoyed because I recorded a lot of video thinking it would be like my ipod touch but there was no sound!!! I tried contacting the makers of this app through the site they provided but its been weeks with no answer. Not happy!!!

jordean14 about Video Zoom 2, v2.7.2