Since then, both the companies have worked together to get the app on iOS and Apple TV. It took a year to solve the issue, but now its finally available for the Apple users.
Using the app users can connect to games they have already purchased for Steam and then stream these titles from a host computer to an iPhone, iPad or Apple TV, using a Steam Controller or any MFi controller.
The app was earlier available to Android and Raspberry Pi 3 and with iOS joining them makes it complete.
You can now grab the app from the App Store.