CBS launches an iOS app to stream full episodes of some shows

CBS (s CBS) on Thursday launched an iOS (s AAPL) app that offers full episodes of primetime shows a week after they air. Daytime and late-night shows are available to watch within 24 hours of airing. Android (s GOOG) and Windows 8 (s MSFT) apps are on the way.

The app lets people “watch CBS shows on the best screen available for them,” CBS Interactive president Jim Lanzone said in a statement, “with a host of extra features that give them a richer viewing experience whenever and wherever they tune in.” Those extra features, which will be integrated “by the start of the Fall TV season,” will include “integrated social feeds; live events that allow fans to engage directly with talent; and second-screen experiences synched to the broadcast with additional content for select shows.”

Shows available through the app include NCISThe Good WifeSurvivorCSI and How I Met Your Mother, among others. But full episodes of some well-known shows, like The Big Bang Theory and The Mentalist, are missing from the app even though they’re available through CBS’s website. And the app does not provide a way to catch up on past seasons, or even all of a current season: only select episodes are available.

Other networks are also experimenting with offering streaming through their apps. NBC allows streaming of some shows through its iOS app, for example, while Fox only lets users stream full episodes through its “Fox Now” app if they authenticate their subscription to a TV provider.