Beatles on iTunes and a Google Voice iPhone app in one day? Apple apparently settled another battle this week, as Google announced Tuesday that an official Google Voice app is now available via the App Store.

The app will let Google Voice users make VoIP calls using their iPhone. In a blog post Google promised cheap international rates, free text messages to U.S. numbers, voicemail transcription, and the option to display your Google Voice number on caller ID when you make calls.

Google Voice for iPhone will also include push notifications, which will alert you instantly when you receive a new voicemail or text. Call will be placed via "direct access numbers," a technology Google started rolling out in July that makes placing calls faster.

The app is available now as a free download from the App Store. To use, you'll need an iPhone with iOS 3.1 or later and a Google Voice account. It is currently only available in the U.S.

A valid Google Voice for iPhone app has been in the works for over a year. In July 2009, Google said that its Google Voice app had been rejected for inclusion in the App Store. Around the same time, Google Voice apps like GV Mobile and VoiceCentral were pulled from the App Store.

That prompted the Federal Communications Commission to write to Apple, AT&T, and Google for details on the squabble. In its August response, Apple denied that it rejected the Google Voice app and said it was still under review. Apple told the FCC that it was concerned because the Google Voice app "appears to alter the iPhone's distinctive user experience by replacing the iPhone's core mobile telephone functionality and Apple user interface with its own interface for telephone calls, text messaging, and voicemail."

Google introduced a workaround to the block in January when it released a Google Voice Web app that was accessible from any HTML5-capabale smartphone, which at the time was only Apple's iPhone and Palm's WebOS phones.

Google did not address the App Store controversy in its blog post.