Distimo has released its latest monthly report on the U.S. App Store, revealing that there are now 4,870 iPad applications in the App Store. Of these, 3,437 are iPad-only apps while the remaining 1,433 are Universal applications that run on both the iPad and iPhone. The report goes on to note that the number of iPad applications on the App Store has grown by 32.7% over the past two weeks and that the largest category for iPad applications is Games, with 1,577 titles, followed by Entertainment and Books with 455 and 396 titles, respectively. The report points out that paid iPad applications make up a larger percentage of that category than paid iPhone applications and are slightly more expensive on average: The average price of an iPad app is $4.67 compared to $3.82 for an iPhone app. The report also lists the top 20 paid and free iPad and iPhone apps, revealing a number of more expensive $10 apps among the iPad top 20, with a higher average price of $5.69, as compared to a larger number of $0.99 apps in the iPhone top 20, with an average price of $2.04. The full report is available from Distimo’s site (free registration required).