GV Mobile+, one of the third-party Google Voice apps available for the iPhone, is free right now. This deal will only last until about 1:00am EST according to the app's developer, so hurry up and save yourself three bucks. [iTunes]
Update 1: Seems that the deal's over, folks. Apparently the developer's intent was for only those who follow his public Twitter account to know about this offer and he did not appreciate it that many folks—us included—saw one of the many, many retweets and decided to share it with our readers.
Update 2: And the app's free again, it seems. The developer claims that it was just a little bit of an error with Apple's setup that caused the early price increase.