Cordial
8.7#1 in grammar checkersFree planFree planAndroidiOSWebExtension
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| Fact | Cordial | Harper |
|---|---|---|
| Browser extension | Yes | Yes |
| Desktop app | Yes | Yes |
| Free plan | Yes | Yes |
| Integrations | Official pages list Outlook, Gmail, Chrome, Edge, Teams, Word, LinkedIn, Facebook, WhatsApp and X/Twitter integrations. | The maker lists browser and editor extensions, a language server, a JavaScript library, a Rust crate, and native apps. |
| Maker size | LinkedIn lists Synapse Développement as a privately held software company with 11–50 employees. | LinkedIn lists Automattic in the 1,001–5,000 employee size range and says it has more than 1,730 employees across 92 countries. |
| Privacy | Cordial’s privacy policy says text submitted for correction through its correction tools is not stored on its servers. | Checks run locally; the maker says Harper has no cloud round-trips, telemetry, or LLM in the loop. |
Cordial suits individuals seeking writing corrections and style suggestions, as well as businesses that want tailored reformulations and team writing support. Windows and browser-extension users can access it, but it is not compatible with macOS.
Harper suits writers seeking grammar and spelling checks with style suggestions, especially those who want web, browser-extension, or desktop access. Its single supported language makes it a fit for users who need that language coverage.