Apple TV does not have a mouse that allows users to directly select and interact with an app. Nor are users able to use gestures and touch to interact with an app. Instead, users use the new Siri Remote or a game controller to move around the screen.
On top of new controls, the overall user experience is drastically different. Macs and iOS devices are generally a single-person experience. A user may interact with others through your app, but that user is still the only person using the device. With the new Apple TV, the user experience becomes much more social. Several people can be sitting on the couch and interacting with your app and each other. Designing apps to take advantage of these changes is crucial to designing a great app.
– Apple’s App Programming Guide for tvOS: The New Apple TV