Valvelate yesterday evening its Steam Link app is now available for iOS devices and Apple TV, free in the App Store:
The Steam Link app allows gamers to experience their Steam library of games on Apple iPhone, iPad, and Apple TV devices while connected via 5Ghz network or wired Ethernet to a host computer running Steam. The Steam Link app features support for the Steam Controller, MFI controllers, and more.
Requirements are an iPhone or iPad running iOS 10 or higher and a computer running Steam on Windows, Mac or Linux. Your iOS devices must be running on the same network as your computer running Steam.
For best performance, Steam recommends a wired ethernet connection to your 5Ghz wireless router and iOS devices connected to the 5Ghz band of the same router.
A year ago,, but Looks like a change of heart has been made.
in the App Store.