The Roku Spectrum app is a great substitute for the digital adapter. As of now, there is not line/device fee for using these apps with Spectrum or Xfinity. Shouldn't be an issue for you but the app is blocked if trying to connect from outside Charter/Spectrum service area. In that case you'd need to install several apps for each network. You'd lose the traditional schedule live content grid as well as live local broadcast channels with local news content.