The Google Play store is now allowing users to try subscription apps on a trial basis before making a purchase.
Once the trial period of up to a week has passed, the user can either cancel the app, or let payment automatically kick in. Android developers can elect to extend the free trial period for more than one week.
Google rolled out its in-app subscriptions feature in May. The idea was to let users pay for monthly or annual subscriptions directly inside of apps, which were set to auto-renew by default, with transactions managed by the Google Play store.
Source: Android developer blog