In addition to supporting its own Apple Music, Apple HomePod also supports third-party services such as Pandora, Deezer and iHeartRadio, but the list of applications compatible with HomePod is not many.
Apple plans to change this in the iOS 17 system, allowing third-party multimedia apps to play multimedia from iPhone or iPad on HomePod by calling Siri.
Apple stated at the WWDC 2023 Developers Conference that even if third-party applications do not have native support for HomePod, they can also call the SiriKit API to allow users to play HomePod through Siri.
After HomePod processes the request, SiriKit will send the relevant request to the iPhone or iPad, and Siri will start your application, which will be transmitted to HomePod through AirPlay.
