Developers who want to create applications for Oculus-based mobile devices such as Gear VR can already use the new integration with Unity Free, which has just been published.
As the Oculus Community Manager comments, without some of the optimizations provided by the Pro version of Unity, it may require a great effort on the part of the developer to achieve the frame rates per second necessary to achieve a good virtual reality experience with Unity Free on a mobile device, but in any case there is the option for those who do not want to spend a penny on the Pro version of Unity.
The plugin can be downloaded from the Oculus website, where we will have to be registered. Although the upload date of the plugin is not updated (it is the one from a month ago that only worked with the Pro version), cybereality confirms that it is an updated version, despite the fact that the date may lead to confusion.