GrammarCheck.ai vs LanguageTool

GrammarCheck.ai checks grammar, spelling, and punctuation, highlighting mistakes and suggesting replacements; a one-click “Fix All Errors” action is also listed. It supports English variants for the US, UK, Australia, and Canada, as well as Spanish, German, French, Portuguese, Italian, and Dutch. Other listed tools include punctuation checking, paraphrasing, plagiarism checking, AI detection, AI humanizing, and summarizing. The service is available on web, iOS, Android, and Linux, with browser extension, desktop app, and mobile app options. Its free plan allows up to 650 words per submission, while Lite allows 2,000 and Pro 6,000. The plans list $4 a month for Lite and $7 a month for Pro; the pricing note separately says paid plans start at $2.50/mo (annual). The service does not offer a free trial, though tools can be used for free. Guest users can make three submissions per minute. The site identifies students, book authors, bloggers, and non-native English speakers as potential users.

LanguageTool is a writing assistant that checks grammar, spelling, punctuation, casing, and style across 31 languages. It also offers tone detection, writing statistics, and paraphrasing modes for making sentences more formal, fluent, simple, or concise. The service works through browser extensions and Windows, macOS, and iOS apps, and integrates with Google Docs, Microsoft Word, Apple Pages, and LibreOffice. Email add-ons are available for Gmail, Outlook, Apple Mail, and Thunderbird. The free version covers spelling, simple punctuation, and some style issues, with a 2,000-character limit per text field; Premium allows up to 150,000 characters. Individual Premium can be billed monthly, quarterly, annually, or every two years, but no plan prices are listed. Text written through the browser add-on is usually not saved; text in the editor is stored and accessible across devices. Teams can manage invited users and share style guides and dictionaries. Business solutions are described as GDPR-conform and support consistent brand voice. Premium has a 14-day money-back guarantee with cancellation and refund without questions.