I built an offline Grammarly alternative and turned it into a Mac app without any coding

A writer used Claude to build a Grammarly-like grammar checker without writing code.

The tool was made in three forms: a browser-based offline version, an offline Chrome extension, and a macOS menu bar app.

It runs locally on the Mac, fixing spelling and grammar without needing an internet connection.

The example highlights how no-code AI app building can quickly create custom productivity tools with better privacy and lower subscription costs.