Side by side
Corrector.app vs WritingTool
Both stand on grammar checkers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidExtensioniPhone+2
Corrector.app combines language checks and word suggestions with a free AI content detector. Consider the character limit and the privacy policy’s stated data-security caveat when deciding whether it fits your writing workflow.
Visit Corrector.app Free plan LinuxMacWindows
Choose WritingTool if you work with extensive texts in LibreOffice and want configurable LanguageTool proofreading, with optional AI functions. Look elsewhere if you need OpenOffice support from version 26.1, or if the Java and LibreOffice requirements do not suit your setup.
Visit WritingToolThe facts
| Corrector.app | WritingTool | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | No | Not published |
| Runs on | Android, Extension, iPhone, Web, Windows | Linux, Mac, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | corrector.app | writingtool.org |
| On grammar checkers | #24 of 88 | #28 of 88 |
Corrector.app: what it does well
- Checks spelling, grammar, and punctuation.
- Supports more than 27 languages, according to the maker.
- Suggests alternative words for sentence context.
- No account registration is required.
- Includes a free AI content detector.
What to know first
- The checker displays a 15,000-character input limit.
- The product details state there is no mobile app.
- The privacy policy says absolute data security cannot be guaranteed.
WritingTool: what it does well
- Checks spelling, grammar and style using LanguageTool.
- Applies rules across paragraph boundaries.
- Caches results for repeat checks on long texts.
- Supports profiles for different document types.
- Runs locally without requiring a remote server.
What to know first
- Requires Java 17 or higher.
- From version 26.7, it requires LibreOffice 24.2 or higher.
- Image and text-to-speech APIs currently support localAI only.
- Extensive AI stylistic changes are experimental and not recommended.
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