Back in March, we reported game developer Valve -- best known for hits such as Half-Life and Portal -- was "looking into" a Steam expansion for mobile devices. Today, we can see the results with the official Steam Mobile app for iPhone now live in the App Store for free. You can read more about Steam Mobile on Valve's website, too.
With the free Steam app for iOS, you can participate in the Steam community wherever you go. Chat with your Steam friends, browse community groups and user profiles, read the latest gaming news and stay up to date on unbeatable Steam sales.
Steam Mobile for iPhone brings the Steam experience from the web to iOS, allowing users to check on their friends' status, chat, browse the Steam game store and manage their wish list, and even add new items to the cart. Judging from the screenshots -- we can't try the app yet, as it's in "closed beta" -- it appears you can easily open a game's page and check out its description, screenshots, add it to the wish list or your Steam cart; the Catalog section has tabs to browse Featured, New, Popular games and "Specials", whereas other navigation options are located in a Facebook-like sidebar that contains links to Friends Activity, News Feeds, and more.
You can download Steam Mobile here, but it's likely you won't be able to use the app right away as you have to "express interest" in the beta first. Steam Mobile has also been released for Android today.