Hi Tom, I'm Faye from Virginia. I was diagnosed with severe osa and central apnea. I was using a Cpap machine, and later using a dental device. After acquiring the dental device (Somnodent) I was retested and told that I needed a full face mask and a Bi-pap machine. I had downloaded an app for the Cpap machine, but cannot locate one for the Bi-pap machine. Do you know whether there is such an app, or have any suggestions? Thank you!