Collect, upload, and view sleep data from your 3B/React Health LunaĀ® PAP using the QR+ feature, which allows you to take a snapshot of your LunaĀ®'s screen to instantly submit your usage data. Optional 3B MaskFitter technology to conveniently help choose Š”PAP mask selections for the device userās lifestyle. This easy-to-use app was designed to augment professional medical sizing for PAP masks and is not meant as a substitute for that purpose.