Top 25 US developers, account for half of app revenue.

A small number of developers, almost entirely game companies, continue to generate the majority of revenue at the leading app stores - Apple’s App Store (iPhone only) and Google Play. Based on daily App Interrogator surveys, Canalys estimates that just 25 developers accounted for 50% of app revenue in the US in these stores during the first 20 days of November 2012. Between them, they made $60 million from paid-for downloads and in-app purchases over this period.

Of the top 25 grossing developers, all bar one (popular music service Pandora with its Pandora Radio app) are game developers. They include cross-platform game developers as well as mobile game specialists, and include Zynga, Electronic Arts, Disney, Kabam, Rovio, Glu, Gameloft and Storm8’s TeamLava. ‘Part of the story here is that successful game developers almost invariably have multiple titles generating revenue,’ said Canalys VP and Principal Analyst Chris Jones. ‘Zynga, for example, had 15 titles in the list of top 300 grossing iPhone apps on average in Apple’s App Store every day, and nine titles in the equivalent list in the Google Play store. Even with its singular focus on its Angry Birds franchise, Rovio has multiple game variants in the list.

canalys.com

Interesting stats, I though the revenue would be more evenly distributed.