This Week in iPhone and iPad News - May 21/2010

iPhone App Sales, Exposed How much money can you make developing iPhone and iPad apps? While it's a hard question to answer, this article helps shed some light on the subject.

Apple claims 'huge' loss over iPhone leak While it's not really a secret a new iPhone is coming, Apple claims the leak of the prototype has hurt potential sales as people may now wait for the new version.

Yes Folks, The Official iPhone Twitter App Is Here After Twitter acquired the makers of the popular iPhone Twitter client "Tweetie", they have release the official Twitter client for the iPhone.

The original Prince of Persia coming to iPhone I'm personally looking forward to this game being ported to the iPhone. While I'm curious how the touch controls will be, I know it will be a great way to pass some time.

Apple release iPhone OS 4 Beta 4 SDK to developers Historically, beta 4 versions of iPhone OS releases signal that we're close to having the real thing.

Usability of iPad Apps and Websites: First Research Findings This free copy of the Nielsen Norman Group Report on iPad application and website usability is an interesting read.