Despite the game streaming service having a successful beta launch on Android earlier this week, it won't be coming to iOS as the official Steam Database Twitter account put the blame on "business conflicts with app guidelines".
A statement on social media reads: "On Monday, May 7th, Apple approved the Steam Link app for release. On Wednesday, May 9th, Valve released news of the app.
"The following morning, Apple revoked its approval citing business conflicts with app guidelines that had allegedly not been realized by the original review team.
"Valve appealed, explaining the Steam Link app simply functions as a LAN-based remote desktop similar to numerous desktop applications already available on the App Store. Ultimately, the appeal was denied, leaving the Steam Link app for iOS blocked from release."
The company added that it hopes "Apple will reconsider in the future".
The app itself works as a remote desktop, allowing users to access their own Steam library of PC games on a mobile device, and then stream them directly for use with a Bluetooth controller, or for touchscreen play.