Great app – Iron Path Review

The app does what it's supposed to do but I have been having some issues. Two problems I've gotten are, Sometimes the tracing goes completely off track, like it'll shoot off to the edge of the screen or the video will be completely black. Not sure what's causing it, might just be I'm not filming straight on enough from the side or something idk.
Review by yoyoyoyoitsalbert on Iron Path.