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QuillBot vs Grammarly: catalog facts
QuillBot	Grammarly
Freemium Free to use with limits, with a Premium subscription for more.	Freemium Free to sign up, with paid plans for more features.
Windows, Android, iOS, Web, Browser extension	Web, Browser extension
Many writing tools in one place Extensions for Chrome, Edge and Safari	Grammar, spelling and clarity checks as you type One-click paragraph rewrites and tone suggestions
Advanced modes need a Premium subscription Text is processed on QuillBot's servers	Requires an account Text is processed on Grammarly's servers
Downloadable app, Web application, Browser extension	Hosted service, Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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