问题
I want to launch an application to Android market. It will be free. But in the future I'm planning to add more features and these features can be used with in app billing.
Regarding to Android checklist, in Google Play a free application can't be changed to paid application. http://developer.android.com/distribute/googleplay/publish/preparing.html#free-priced
But what about in app billing. Any user freely can install my application but will pay if he/she wants more features.
What should I do while launching application ? Is it OK to select free as app type ?
回答1:
you can always add in-app billing into a free application, what they mean when they say you cannot change a free application to paid is you cannot change a free app to an app that you have to pay to download
来源：https://stackoverflow.com/questions/20127970/publishing-free-application-to-android-market-but-in-app-billing-in-future