GrammarCheck.ai

Overview

GrammarCheck.ai combines grammar correction with a wider set of writing tools, including paraphrasing and summarizing. It suits students, book authors, bloggers, and non-native English speakers who want correction suggestions across several languages and platforms. The free plan is capped at 650 words per submission, so frequent work on longer drafts calls for a paid tier.

Key features

The checker reviews grammar, spelling, and punctuation, highlights mistakes, and suggests replacements. Its one-click “Fix All Errors” action can speed up routine proofreading; style suggestions add feedback beyond basic error correction. That makes it useful for a cleanup pass, while writers should still decide whether each replacement preserves their intended meaning and voice.

GrammarCheck.ai supports English in US, UK, Australian, and Canadian variants, along with Spanish, German, French, Portuguese, Italian, and Dutch. It also offers punctuation checking, paraphrasing, plagiarism checking, AI detection, AI humanizing, and summarizing. The range is handy for people who want several text tools in one service, though the word limits remain relevant when working with long documents.

Guest users can make three submissions per minute. The Chrome and Chromium extension sends selected text to GrammarCheck.ai’s servers for checking and does not access other page content. Submitted text may be stored for free and guest users to help improve the service. For registered and premium users, text is kept in checking history until they delete it or request deletion; submitted text is also processed by third-party AI providers, including Google Cloud AI services.

Pricing

The free plan costs nothing, includes 5,000 credits, and allows up to 650 words per submission. It is a sensible starting point for occasional proofreading and short pieces; there is no free trial, but the tools can be used for free before upgrading.

Lite costs $4 a month, with 40,000 credits and a 2,000-word submission limit. Lite Yearly is shown at $2.50 a year, billed yearly at $30, with 480,000 credits, the same 2,000-word cap, and history. The yearly listing has a lower stated starting rate and a larger credit allowance, while keeping Lite’s per-submission ceiling.

Pro costs $7 a month and includes 80,000 credits, unlimited grammar checks, and a 6,000-word submission limit. Pro Yearly is shown at $4 a year, billed yearly at $48, with 960,000 credits, unlimited grammar checks, and the same 6,000-word cap. These tiers suit recurring or longer-document use; the yearly options have a lower stated rate and larger credit allowance, but still cap each submission.

The API plans serve integrations with different quotas: API Tester costs $7 a month for 20,000 credits, 250 words per submission, and 5 requests per minute; API Basic costs $10 a month for 40,000 credits, the same word cap, and 15 requests per minute; API Business costs $50 a month for 100,000 credits, 750 words per submission, and 40 requests per minute. Paid plans list 24/7 customer support. Users can also contact support through the Contact Us page or Live Chat.

Platforms

GrammarCheck.ai is available on Android, iOS, Linux, and the web, with an API and browser extension. The service also has a desktop app. That spread gives users several ways to reach it, although the extension’s selected-text processing means it is worth considering its data handling before using it with sensitive writing.

Who it's for

Students, authors, bloggers, and non-native English speakers are the clearest fit, especially if they want grammar correction alongside other writing tools. The free plan works for short, occasional submissions. Writers who regularly handle pieces above 650 words will need a paid plan, and those working with drafts longer than 6,000 words will need to split submissions.

Pros and cons

• Pros: Corrections include replacement suggestions and a one-click fix action, which can make routine proofreading faster.
• Pros: Support for multiple languages and several additional writing tools makes the service useful beyond basic grammar checks.
• Pros: Pro plans allow submissions up to 6,000 words, with unlimited grammar checks on the Pro listings.
• Cons: The free plan’s 650-word submission limit is restrictive for full-length essays or chapters.
• Cons: The API plans limit submissions to 250 words on Tester and Basic, and requests per minute vary by tier.
• Cons: Free and guest text may be stored to help improve the service, and submitted text is processed by third-party AI providers.

Alternatives

Choose Harper if you want a free, open-source grammar and spelling checker that processes text locally. LanguageTool is another freemium grammar-checking option. Consider QuillBot if its free paraphrasing allowance of up to 100 words and two modes fit your workflow. Outwrite is an alternative freemium option with a free trial. Trinka offers another freemium option. Wordvice AI is worth considering if its free plan’s 5,000 words per month and 500-word submission limit suit your proofreading needs. Linguix offers free grammar and spelling checks, basic AI suggestions, and limited paraphrasing. Scribens has a free edition capped at 8,000 characters per day.

Browse our AI Grammar Checkers and Grammar checkers lists for more options.

Verdict

GrammarCheck.ai is a good fit for writers who want correction suggestions, multilingual support, and extra text tools in one place, with a free tier for short submissions and higher word caps on Pro. Look elsewhere if you need longer free submissions, local text processing, or prefer not to submit drafts to a service that stores some text and uses third-party AI providers.