Back in May of this year, Google unveiled its in-app subscription service, which allowed developers to easily add an auto-renewing subscription into their apps. Fast-forward to today, and Big G has added another new feature to the service: try-and-buy. Beginning now, developers can let users try a subscription for a a predefined amount of time without having to shell out the cash first. Here's how it'll work.

Once the service has been set up, the end user must "purchase" a subscription in the app. The process will complete as normal - the "sale" of $0.00 must be confirmed, and an email confirmation will be sent out, just as if an actual transaction was made.