Android Using Licensing and/or in-app billing

I'm developing an application that will have some features that the user must pay to use. I was planning to use a Lite and Pro version for this, but the release of In-App Billing have got me thinking...

If I use In-app billing is there any need to implement the licensing (http://developer.android.com/guide/publishing/licensing.html) policies suggested by Google? Or is it enough to implement the Billing stuff?

The application is available for free, instead some features will be enabled using in-app billing. Hence I don't really care if someone "copies" the application as long as they cannot copy purchased features. 开发者_运维技巧

BR, Rasmus

If both applications will be free, you should implement only In-App Billing. You can read Billing best practices for more information.

I have found that the inapp billing and licensing code don't play well together, crashing the app in certain scenarios, like when attempting a purchase when not online.

I don't think it would be worth the risk and overhead to use licensing for a free app even with inapp purchase options. I believe the licensing documentation even mentions licensing can't be used with free apps.