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