The best feature of the ownCloud for Android 2.5 app is support for the OAuth 2 authorization framework designed to enable apps to get limited access to user accounts on an HTTP service like Facebook or GitHub. This adds an extra layer of security when you communicate with an ownCloud cloud server. Among other enhancements that landed in the ownCloud for Android 2.5 app, we can mention the ability to display a file listing option (a.k.a. anonymous upload) when sharing a folder, which requires OC X, more reliable instant uploads, as well as better notifications when viruses are detected during an upload.