Since version 5, Xcode no longer supports 3rd party docsets. It can display them, but you cannot add new docsets from within Xcode and it won’t update them. You have to do it manually. That’s where the Docs for Xcode app comes in. It installs docsets, subscribes to feeds and keeps the documentation always up to date. Support Please email me at vaclav@slavik.io with any questions or feedback. I’m a