Amazon announced that in-app purchasing capability is now available for apps in its Appstore for Android. Users can now purchase digital content and subscriptions through apps using Amazon’s 1-Click purchasing system.

The new service means developers can better monetise their apps and games as revenue can be generated after apps have been downloaded by customers.

“Many of Amazon Appstore’s customers have shopped with Amazon before and they trust Amazon’s easy payment process, which leads to higher conversion of developers’ in-app content and subscriptions,” said Amazon Appstore director Aaron Rubenson.

The functionality has already been integrated into apps by developers such as ZeptoLab, Disney, Glu Mobileand Gameloft, as well as digital content publishers such as Conde Nast, Dow Jones and the New York Post.

“We found that by offering a product with IAP, rather than other monetization types, our conversion rates went up, as did our revenue, on a per-title basis,” said G5 Entertainment director of marketing, Larissa McCleary.

“By integrating In-App Purchasing, our goal was to offer Amazon’s frictionless purchasing experience to our customers. This includes the ability for customers to easily subscribe using 1-Click, take advantage of a 14-day free trial, and to auto-renew,” said director of digital projects, David Rozzi, at the New York Post.

A quick start guide, tutorials and sample code for developers interested in adding in-app purchasing to their apps are available at Amazon’s AppStore Developer Portal.

It was reported last week that Amazon was testing the in-app purchasing technology, with in-app purchases forecast to generate US$5.6 billion in revenue in 2015 by IHS iSuppli.

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.