Why "written in Swift" is of any importance to be in the title?
Please don't mention anything related to software development, this upsets the hackers.
If the title said "Hidden Bar: macOS utility to hide unused menubar icons, written in JS (Electron)", I wouldn't even have considered clicking the link to read more about the project, let alone install the software, because an Electron based software to do such a minor thing like hiding menu items is never going to deliver an acceptable user experience for me.
As a user, I need to know which operating system an app runs on, otherwise I might not be able to run it.
The language used to write it plays no role in that.