I am confused about tvml versus using tvOS to create an app that works on all three platforms. For the sake of clarity, can someone please explain if using a tvml template provided by Apple will also work on iPad & iPhone?
In other words, the HBO GO app works on the Apple TV, the iPhone and the iPad, and allows users to pick up a movie they were watching on the phone on the Apple TV in the spot where they left off.
In order to do this, do developers have to create a tvOS app from scratch that will pass information between all other devices, or can we use a tvml template and still pass info to the other devices? Using tvml would clearly be a time saver, but I'm not sure that we can use those templates to move info back and forth between regular iOS apps.
A thorough explanation would be very much appreciated!