According to Bloomberg News, the in-app purchasing system would include both monthly subscriptions, say for a magazine, or a one-time purchase, say to access additional levels in a game. It is currently being tested by a physical fitness app called Skimble, which has been conducting trials for about a month.
Bloomberg News reports:
Selling items from within downloadable software can generate revenue for developers as well as companies, such as Google and Apple, that distribute apps through online stores. Amazon could use the transactions to wring more sales from its Kindle Fire tablet and the widening array of applications that can be downloaded to the device.
Amazon.com, which has a deal with mobile payments firm Bango, is expected to charge a 30 percent commission on the in-app purchases, according to Bloomberg.