Update 11/04: Backbone confirmed to IGN that the iPhone 13 Pro and 13 Pro Max adapters it creates are not 3D printed. But rather are made of a "premium" material like the Backbone One controllers ...

It’s free to order, but you’ll pay shipping fees. Backbone has also released open-source 3D printable files for the adapter, if you’d prefer to go that route. The files are hosted on ...