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Writing Tools vs Refine: catalog facts
Writing Tools	Refine
Free Free and open source; cloud model providers may charge separately.	Free Free to download and use without an account.
Windows, macOS, Linux	macOS
Works on selected text in any application Supports local LLMs as well as cloud APIs	Grammar checking runs locally and works offline Every fix explains the rule behind it
Needs an API key or a local model set up Output quality depends on the chosen model	macOS only, requires macOS 14 or later Local model quality depends on the Mac it runs on
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.