I didn't have it mounted, but I did try to keep as still as possible. I just tried again for a while while keeping it mounted in portrait and in landscape. I've been keeping my head as still as possible, but it still feels really hard to use. Will you all continue to work on it up until the September release and will there be more beta tests? As for our apps, it could be that they're made with Solar2d. It does work with an app that is strictly made with Xcode. That must be the differentiator.