Harper
8.5#5 in grammar checkersFree planFree planAndroidiOSWebAPI
VisitHarper vs Wordvice AI
Wordvice AI
8.6#3 in grammar checkersFree planFree planWebExtensionmacOSWindows
VisitWhat both publish
| Fact | Harper | Wordvice AI |
|---|---|---|
| Browser extension | Yes | Yes |
| Free plan | Yes | Yes |
| Integrations | The maker lists browser and editor extensions, a language server, a JavaScript library, a Rust crate, and native apps. | Wordvice AI offers a Chrome extension and a Microsoft Word add-in; the add-in supports Word 2021 and newer, Microsoft 365, and Word Online on Windows and Mac. |
| Languages | Harper supports English and British, American, Canadian, Australian, and Indian dialects of English. | The Microsoft marketplace listing says the paraphraser works in English and more than 47 other languages. |
| Languages supported | 1 | 11 |
| License | The source code is released under the Apache License 2.0. | Wares.gg classifies Wordvice AI as proprietary software rather than open source. |
| Rating on Chrome Web Store | 4.2 out of 5 from 128 ratings | 4.5 out of 5 from 11 ratings |
Harper plans
- FreeFree
- HarperFree
Wordvice AI plans
- BasicFree
- Premium$9.95 a month
- Premium PRO$26.95 a month
- Team Plan$9.95 a month
- Team Plan (50+ seats)$101.40 a year
- Team Plan (10–49 seats)$107.40 a year
Pick Harper if…
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.
Pick Wordvice AI if…
Wordvice AI is designed for students and academic writers working on research papers, admissions essays, business documents or everyday writing. Team plans suit groups that need shared Premium access and member management.