Google on Thursday announced an update to its Google Play Store that allows Android users to make in-app subscriptions. The update comes more than year after the Mountain View-based company introduced in-app billing in what was then called the Android Market. “Since the launch, In-app Billing has been extremely successful in helping developers monetize their apps through try-and-buy, virtual goods, upgrades, and other popular business models,” Google said on its developer blog. “Today, 23 of the 24 top-grossing apps in Google Play use In-app Billing, and the total revenue generated from in-app purchases exceeds revenue from traditional app purchases.” In-app subscriptions will allow developers to sell monthly or annual subscriptions from within their apps. “Developers just set the price and billing interval and Google Play manages the purchase transactions for them, just as it does for other in-app products and app purchases,” the company said.