Harper vs TextGears
Harper
writewithharper.com
TextGears
textgears.comSide by side
| Figure | Harper | TextGears |
|---|---|---|
| Price from | Free | $2.48/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 2 | 6 |
| Spec score · Grammar checkers | 8.9 (#19) | 9.2 (#9) |
| Free plan | Yes | Yes |
| Language coverage | Supported English dialects are British, American, Canadian, Australian and Indian English. | The service lists English, French, German, Portuguese, Russian, Italian, Arabic, Spanish, Japanese, Chinese and Greek support. |
| Languages | Harper supports English and British, American, Canadian, Australian, and Indian dialects of English. | The API documentation lists English, French, German, Portuguese, Russian, Italian, Arabic, Spanish, Japanese, Chinese, and Greek as supported languages. |
| Languages supported | 1 | 11 |
| Self-hosting | The project is designed for local execution and supplies command-line, language-server, WebAssembly and native integration code rather than a hosted checking service. | TextGears invites businesses seeking on-premises or self-hosted translation and text-checking solutions to contact it. |
| Style suggestions | Yes | Yes |
| Support | The maker directs users to Discord or GitHub discussions for questions. | Support is offered in English and Russian, and the support page says 96% of requests are answered within 24 hours. |
| What it does | Harper is an English grammar checker that detects spelling, capitalization, phrasing and grammar problems locally on the device. | TextGears analyzes text to find spelling, grammar, and stylistic errors and check readability. |
Plans
TextGears
- PRO$2.48 a month
- FreeFree
- Silver$29.95 a month
- Gold$99.95 a month
- FreeFree
- PlatinumPriced on request
In their own words
Harper
Harper is a free, open-source grammar checker that flags capitalization, spelling, awkward phrasing, and grammar errors. The maker says checks run locally, with no cloud round-trips, telemetry, or LLM in the loop, and that suggestions appear in under 10 ms. Harper is available through browser and editor extensions, a language server, a JavaScript library, a Rust crate, and native apps. Listed integrations include Chrome, Brave, Edge, Firefox, VS Code, Cursor, Obsidian, WordPress, Neovim, Zed, Helix, Emacs, and Sublime Text. Its language support covers English and British, American, Canadian, Australian, and Indian English dialects. Harper Desktop lets users toggle rules, add dictionary entries, select a dialect, and turn checking on or off per app. The desktop app is labeled beta for macOS 14 or later, and the Windows desktop app is also described as a beta; its binary was not signed at the time of the listed post. Harper is free, with no account or credit card required.
TextGears
TextGears checks writing for spelling, grammar, style, and readability, through its website and API. The API also provides autocorrection, text analysis, language detection, summarization, and keyword extraction, returning JSON through HTTP or HTTPS requests. Its documentation lists 11 languages, including English, French, German, Portuguese, Russian, Italian, Arabic, Spanish, Japanese, Chinese, and Greek, as well as dialect codes such as en-US, en-GB, and pt-BR. A Postman collection and JavaScript library link are available for integration. Free access includes 500 requests per month, 200k characters per month, and a 4k-character request limit. PRO costs $2.48 a month and includes unlimited checks, translations, and paraphrases of long texts, custom dictionary rules, and an option not to store texts. TextGears says AI does not support every language and recommends standard plans when language breadth matters more than AI analysis quality. Readability metrics are recommended for texts of at least 30 words. The maker is headquartered in Tallinn, Estonia.