This new post on the Microsoft Intune blog, help you understand the capabilities of unmanaged apps, managed apps, and MAM-protected apps:
“There are many different ways that applications can be made available to your users today. Users can directly install apps from public stores or your mobile device management (MDM) solution can deploy them (either automatically or at the user’s request). For this post, we’ll consider the apps that are installed from a public store to be “unmanaged” and apps that are deployed via your MDM solution (like Microsoft Intune) to be “managed”.”
Full post:
http://blogs.technet.com/b/microsoftintune/archive/2015/05/26/understanding-the-capabilities-of-unmanaged-apps-managed-apps-and-mam-protected-apps.aspx