Castpane is a screen mirroring receiver for Windows 10 and 11 that works with AirPlay. On an iPhone, iPad or Mac, open Control Center, choose Screen Mirroring and pick your PC: the screen and sound appear in a normal window you can move, resize, keep on top or make full screen. There is also an audio-only mode that turns the PC into a speaker. Sound is included, with no watermark and no second app. When a device cannot see the PC, a built-in connection wizard checks the firewall, network type, adapters and discovery and says what to change in plain words. Free companions: Castpane Link for Mac helps on networks that hide the PC, and the Castpane Tab Cast extension sends a Chrome or Edge tab with sound. The download is free with 15 minutes per connection; a one-time in-app purchase removes the limit. No subscription, no account, no ads.