Great work. Sure, it was built off of Viewfinder's mechanics, but it is a vastly different experience overall.
That said, there was a delay for stopping when moving for whatever reason (on version 1.2). Not sure if that was deliberate, but it did kind of pull me out of the experience a bit.
Otherwise, while it still could do with a bit more polish, I think this is a great game and I enjoyed my time playing it. I look forward to this dev's future work.
Edit: The issue with the delay for stopping could be a WINE compatibility issue (played on Linux).