Joyn is a German streaming service from Seven.One Entertainment Group. It offers free, ad-funded streaming of series, shows and full seasons, live streams of many channels (including ARD, ZDF, ProSieben and Sat.1) and catch-up libraries of broadcasters such as ProSieben, Sat.1, Kabel Eins, Sixx, TLC and DMAX. The Joyn+ subscription adds, among other things, fewer ad breaks, downloads, HD and restarting live TV from the beginning. Joyn is available through the website and apps for iOS, Android and Fire TV, among others.
According to Wikipedia, Joyn GmbH is a German company fully owned by ProSiebenSat.1 Media. Since 2025 ProSiebenSat.1 has been majority-controlled by MFE-MediaForEurope, a media group controlled by the Berlusconi family. MFE plans to combine Joyn with the Spanish streaming service Infinity. Where viewer data is hosted is not stated in the sources consulted. The service is not open source and cannot be self-hosted.