What Vernacular needs
macOS 26 or later.
Vernacular runs on macOS 26 or later.
It’s made for Macs with Apple silicon, where Apple’s change to Rosetta applies. It also runs on a Mac with an Intel processor, and says that everything made for Intel runs natively there. On a Mac with an Intel processor
It doesn’t need Rosetta, an internet connection or any permission to read your Mac. If Rosetta isn’t installed, it says so under the answer: “Rosetta isn’t installed on this Mac, so an Intel app asks to install it before it opens.”
Apps in your own Applications folder, in your home folder, or on another disk need you to choose the folder once. Add a folder or disk