App research specialist VisionMobile has published the latest version of its Developer Economics report, providing insights into mobile application development worldwide.

It estimates that 2.3 million people were mobile app developers in 2013, with 760,000 (32.9%) of them living in Asia and 680,000 (29.7%) in Europe.

76.9 million tablets were shipped around the world in the last three months of of 2013, according to figures from the International Data Corporation (IDC). That’s 62.4% up from the previous quarter and a year-on-year increase of 28.2%, although a much lower growth rate than the same quarter in 2012.

Total tablet shipments for 2013 reached 217.1 million units; up 50.6% from the previous year.

A new report from Alcatel-Lucent suggests that more than 11.6 million mobile devices are infected with malware. It’s based on figures from Alcatel-Lucent’s Kindsight subsidiary, which is able to measure the impact of network traffic.

Mobile malware infections were said to be up by 20% in 2013, with 4G LTE devices the most likely to be infected.

Mark Bridge writes:

Recent figures released by ABI Research have prompted the market intelligence company to ask whether Google is losing control of the Android ecosystem.

At first glance, Android dominated smartphone shipments for the final quarter of 2013. ABI Research says 77% of the 287 million smartphones shipped in Q4 2013 were running Android.

Mobile payment provider iZettle has released its first software development kit for developers. It follows the release of iZettle’s API in 2012.

The free iOS SDK makes it easier for developers to add payment services to their mobile applications in any of the nine countries where iZettle operates.