In anticipation of a launch of the Photovine service which was announced Tuesday, Google has just released a free invite-only Photovine for iOS app on the App Store and posted the cutesy teaser (see below) on the official Photovine page. Beginning today, people can request an invite on the site, which is needed to take advantage of an iOS app. You’re advised to hurry up because invitations for Google’s recently launched products have been  in high demand (Google+, anyone?). By the way, don’t you find it weird they would feature an iPhone 4 app on both the website and in the video clip rather than a Nexus S?

For those uninitiated, Photovine is Google’s attempt at social photo sharing that takes clues from Flickr, Facebook photos, Picasa and other services. “Photovine is a fun way to learn more about your friends, meet new people and share your world like never before”, says the official blurb. You begin creating a vine by taking a photo and creating a new caption.  Other people will see your vine and join in by adding their own photo, showing their own take on the caption. Google explains:

Release notes from iTunes after the break

[youtube=http://www.youtube.com/watch?v=-MPIZKPhfDY]

Photovine is a fun way to learn more about your friends, meet new people, and share your world like never before. It all starts with what we call a photovine: a group of photos around a single, shared caption. Start a new vine with a photo and caption of your own or add your photo/take on someone else’s vine. Photovine is invite-only at the moment, so you’ll be asked to enter your email address after installing the app. If you haven’t already been invited to Photovine by a friend, you can visit our website at photovine.com to request an invitation.