"How do I know when to change the Filters? You can find out if you need to change the Oas’s Purification Filter via the Oas app, showing the overall status of

"How do I know when to change the Filters? You can find out if you need to change the Oas’s Purification Filter via the Oas app, showing the overall status of your Filters." I wonder if they're using Bluetooth or other local networking or if this really means my shower needs to connect to the Internet.