Amazon is testing in-app purchasing technology to allow mobile users to purchase content through apps bought from its Appstore for Android, reports Bloomberg.

The web giant is working with a number of developers to test subscriptions and purchases of individual items, according to co-founder of fitness app developer Skimble, Maria Ly, whose company has been involved in the programme. Amazon would not comment on the testing when approached by the publication.

Amazon could use the technology to generate more sales from its Kindle Fire tablet, which is heavily reliant on revenue from content. Ly told Bloomberg that Amazon plans to charge 30 percent in commission for developers to use the in-app purchase service.

Selling items through apps can also generate revenue for developers. Much of Skimble’s sales come from subscriptions and in-app purchases, meaning the trial is of particularly interest. “We really wanted to attack the Kindle Fire market, but also have access to the payment methods that support our business,” Ly said.

According to IHS iSuppli, in-app purchases will create US$5.6 billion in revenue in 2015, compared to US$970 million in 2011.

Amazon’s Appstore for Android has 31,000 apps available just a year after launching. Apps analytics firm Flurry recently said Amazon is delivering more than three times the revenue for developers through its app store than Google Play does.