Not sure if there is for Apple TV
but they have an iOS app for ipad/iphone https://apps.apple.com/us/app/jellyfin-mobile/id1480192618
Not sure if there is for Apple TV
but they have an iOS app for ipad/iphone https://apps.apple.com/us/app/jellyfin-mobile/id1480192618
Swiftfin, Moonfin are two Jellyfin clients for Apple TV.