Rewrait

Rewrait has a free plan, and it runs as a native app on Mac and Windows rather than in a browser. There is no web version and no support for other operating systems.

Rewrait is an AI writing assistant and AI detector that rewrites, proofreads and checks text inside whatever application you are already using.

The workflow is short: select text, press a global shortcut, and Rewrait improves it and replaces it in place.

It handles instant rewrites, grammar fixes and text quality checks, and it includes a multilingual assistant for translation and localization.

Smart Prompts let you set custom writing styles and save your own templates.

Other features include Tone Consistency, Precision Control and Deep Context Sense.

The makers say it beats Grammarly and QuillBot at AI detection and writing help, a claim you should test on your own text.

The lack of a web app is the main catch.