Pix4Dcapture, our mobile app, aims assisting users in flying drones. We take advantage of the autopilot mode of the drone. There is no such equivalent for the OSMO+ camera. Hence, it is not in our pipeline to have this camera supported by the app.
However Pix4Dmapper, our computer software, can process images taken with any cameras, DSLR, large format or lightweight compact camera, perspective or fisheye lens, and using any applications. The only requirement is to have .jpeg or .tif images.
Therefore, you can use the OSMO+ camera to acquire ground images and use them for modelling.
For recommendations about the image acquisition please see: https://support.pix4d.com/hc/en-us/articles/202557459