Slow swirling motion

My final results appear as though I set up a camera on a tripod on a boogie board in a gentle wave pool. The vids slowly swirl, kinda in a circular motion. I cannot figure out why because I have it set up on a tripod and the phone/camera is not physically moving at all. It almost renders the app useless. I even locked the focus in the center of where I was shooting thinking surely that would fix the issue but it did not. They are basically in focus but the swirling effect is distracting & annoying. Anyone else know a solution. Please share because I used to love this app (surf rider mail at aol dot com) remove spaces in part before @

Eric Wilson about Hyperlapse from Instagram, v1.2.0