Vevo’s long-awaited iPhone app is now live at the App Store, following Apple’s approval.

The app is free and basically all content available on Vevo is available via the app. Users can stream any video in the Vevo catalog, can create video playlists, view video premiers, charts, original programming and more.

However, some functionality is not available, such as leaving user comments. But other things like sending links to videos via Twitter, Facebook and e-mail, and links to buy songs on iTunes are still there. One interesting added feature is a location-based element that lets users see what other users are watching in a given area.

In conjunction with the launch, Vevo also unveiled a new original series called Ask:Reply. Fans are able to submit questions to their favorite artists via Twitter and Facebook, and the artists will leave video responses. The first installment features Ke$sha, with others in the pipeline.

The reason the Vevo service took so long to go mobile is because the Vevo portal online is based on Flash, which the iPhone famously does not support. Vevo needed to build a mobile video player on completely different technology. The mobile app is available in the U.S. and Canada only, for now. An iPad version is still in development, as are version for other mobile platforms like Android.