Yes, we're currently finishing the internal Beta testing of the OnDemand app and will let everyone know more soon.
We're going to wait to release details about our apps until they're released, but all iOS apps still need and use wireless. Though you can use a wired connection from your iPad or iPhone directly to your TV for the output as an option. Also, our first app release will be for OnDemand videos only. Cathe Live will be a separate app that will be released later on. You may also want to look at purchasing another router or an extender for the router you have.