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Grammarly vs HyperWrite: catalog facts
Grammarly	HyperWrite
Freemium Free to sign up, with paid plans for more features.	Freemium Free to start, with paid plans for more use.
Web, Browser extension	Web, Browser extension
Grammar, spelling and clarity checks as you type One-click paragraph rewrites and tone suggestions	Autocomplete suggestions inside Gmail and other sites Research with citations from scholarly sources
Requires an account Text is processed on Grammarly's servers	Extension is Chrome only Text is processed by a cloud service
Hosted service, Browser extension	Web application, Browser extension
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Not stated if it works offline	Needs internet
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.