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Corrector.app
What it is
Corrector.app is a free writing checker that reviews spelling, grammar, and punctuation, then suggests corrections. It supports more than 27 languages, and can recommend alternative words that may better match a sentence and its intended message. The checker shows a 15,000-character input limit and does not require account registration. The site also offers a free AI content detector for identifying AI-generated text. Corrector.app can be used on the web, and its download page links to Chrome, Firefox, and Edge extensions as well as iOS and Android apps. The checker page also says it can be used through a mobile browser. The maker says the tool is intended to help students and professionals improve their writing. The service collects usage data and uses cookies and similar tracking technologies; its privacy policy says it cannot guarantee absolute security for data sent or stored electronically. Corrector.app has a Free plan listed as free, with no free trial listed. The site says email inquiries are read and answered within 24 hours.
For and against
For
- Supports more than 27 languages.
- Does not require account registration.
- Includes a free AI content detector.
- Offers Chrome, Firefox, and Edge extensions.
Against
- Checker input limit is 15,000 characters.
- Privacy policy cannot guarantee absolute data security.
- No free trial is listed.
The verdict
Corrector.app provides language checks and word suggestions at no charge, with browser extensions and mobile apps linked on its download page. Keep the character limit and stated data-security caveat in mind when choosing it.
Who it suits
Corrector.app may suit students and professionals who want spelling, grammar, punctuation, or word-choice suggestions without creating an account. It also offers browser extensions and mobile apps for people who prefer those formats.
Plans and prices
Free
No registration · instant checks · ads displayed
Read 21 Oct 2026 · corrector.app
On the record
- Account requirement
- The maker says the grammar checker does not require users to register an account.corrector.app · read 11 Oct 2026
- Advertising model
- Corrector.app says Google AdSense and Ezoic advertising revenue pays for servers, development, localization, SEO and support.corrector.app · read 21 Oct 2026
- AI content tool
- The site also offers a free AI content detector for identifying AI-generated text.corrector.app · read 11 Oct 2026
- AI detector
- A separate free tool estimates the share of text generated by systems including ChatGPT and GPT-4.corrector.app · read 21 Oct 2026
- AI detector languages
- The AI detector says it can analyze many languages, including Chinese, Hindi, Spanish, French, Arabic, Portuguese, Russian, German, Japanese and Indonesian.corrector.app · read 21 Oct 2026
- AI detector method
- The AI detector describes using natural-language processing, syntax and semantic analysis, machine learning and GPT-related classifiers.corrector.app · read 21 Oct 2026
- Browser extensions
- The download page links extensions for Chrome, Firefox and Edge.corrector.app · read 21 Oct 2026
- Character limit
- GetApp reports that the input field accepts up to 15,000 characters per session.getapp.com · read 21 Oct 2026
- Chrome integration
- The Chrome extension sends selected text to Corrector.app's editor, where users choose a language and run correction.chromewebstore.google.com · read 21 Oct 2026
- Company headquarters
- The maker's site gives 23 New Drum Street, London, England, E1 7AY as its address.corrector.app · read 21 Oct 2026
- Company registration
- UK Companies House lists Grammar Buddies LTD as incorporated on 15 February 2022 and dissolved on 25 July 2023.find-and-update.company-information.service.gov.uk · read 21 Oct 2026
- Data collected
- The privacy policy says usage data may include IP address, browser details, visited pages, timestamps, device identifiers and mobile operating-system information.corrector.app · read 21 Oct 2026
- Developer support
- The maker publishes [email protected] for developer enquiries and states that support emails are answered within 24 hours.corrector.app · read 21 Oct 2026
- English variants
- Its checker includes regional English variants such as US, UK, Australian, Canadian, Indian, Pakistani, Philippine, Nigerian, Singaporean, South African, New Zealand and Irish English.getapp.com · read 21 Oct 2026
- Firefox licence
- Mozilla lists the extension licence as All Rights Reserved.addons.mozilla.org · read 21 Oct 2026
- Firefox permissions
- The Firefox add-on requires access to browser tabs and data on all websites.addons.mozilla.org · read 21 Oct 2026
- Funding
- The maker says advertising from Google AdSense and Ezoic helps fund site costs, development, localization, SEO and technical support.corrector.app · read 11 Oct 2026
- GetApp customer profile
- GetApp lists freelancers, small businesses, midsize businesses and enterprises among typical customers, with proofreading as the primary use case.getapp.com · read 21 Oct 2026
The review
Corrector.app is a free online checker for spelling, grammar and punctuation, with word suggestions and a separate AI content detector. It best suits students and professionals checking short passages without an account. Its 15,000-character input limit and data-security caveat are meaningful drawbacks for longer or sensitive work.
Overview
Corrector.app combines proofreading corrections with alternative-word suggestions intended to better match a sentence’s meaning. Support for more than 27 languages gives it wider reach than a single-language checker, and the free AI content detector adds a distinct use beyond editing. The no-registration workflow lowers the barrier to a quick check, but writers with longer drafts will need to work in sections.
Grammar Buddies LTD operates the service from 23 New Drum Street, London, England, E1 7AY. Advertising helps fund site costs and development. The privacy policy says the service collects usage data and uses cookies and similar tracking technologies; it also cannot guarantee absolute security for electronically transmitted or stored data. That caveat makes Corrector.app a poor fit for confidential writing.
Key features
Proofreading and phrasing
The checker identifies spelling, grammar and punctuation errors and proposes corrections. Word alternatives can help refine phrasing, though they are suggestions rather than a substitute for the writer’s judgment about meaning and tone. The 15,000-character cap is workable for shorter pieces, but can interrupt editing of a full-length document.
AI content detection
A free AI content detector is also offered on the site. It gives users a separate reason to visit, but the stated checker limit applies to text input and should be kept in mind when assessing longer material.
Pricing
The Free plan costs nothing. It includes free grammar and spelling checks, requires no account registration and displays a 15,000-character input limit. There is no free trial because the service is free. This plan suits occasional proofreading and shorter text; it does not remove the character cap, and no paid plan is described as an upgrade path.
Platforms
Corrector.app is available on the web, Android, iOS and through browser extensions. Its download page links to extensions for Chrome, Firefox and Edge, plus mobile apps; the checker can also be used in a mobile browser. The maker lists no other product integrations, so users seeking connections to other writing tools may need a different workflow.
Who it's for
Students and professionals who want a free, no-account language check for short passages are the clearest fit. Multilingual writers may value support for more than 27 languages, while anyone handling confidential text or routinely editing material beyond the character limit should look elsewhere.
Pros and cons
- Pro: Free checks without account registration make occasional proofreading easy to access.
- Pro: Spelling, grammar, punctuation and alternative-word suggestions cover both error correction and phrasing.
- Pro: More than 27 languages, mobile apps and browser extensions offer several ways to reach the checker.
- Con: The 15,000-character input limit can force longer drafts into multiple sections.
- Con: Usage data collection, tracking technologies and the stated inability to guarantee absolute electronic data security argue against submitting sensitive writing.
- Con: No other product integrations are listed, limiting its fit for users who want an established connected editing workflow.
Alternatives
For dedicated AI-detection comparisons, browse AI Content Detection Software; for proofreading options, see Grammar checkers.
TrustOriginality.ai is another option for text analysis, with a free tier of one analysis per month and a paid Quick Check plan.
AI or Not may suit users who want AI text and image checks alongside API access; its free plan includes credits, monthly text-detection capacity and image checks.
Blackboard Learn is an institution-focused learning management system rather than a direct proofreading substitute.
Facia Deepfake Detection is a paid alternative for users focused on deepfake verification, with pay-as-you-go checks.
Ahrefs may fit readers looking for website data and SEO tools rather than writing corrections.
GPTZero is another AI detector, with a free monthly allowance and a free trial for its paid option.
Trinka is another grammar-checking option for readers comparing writing tools.
Hive AI-Generated Content Detection is a paid-focused alternative for AI-content detection, with free credits available after adding a payment method.
Verdict
Choose Corrector.app for free, no-account checks of shorter writing, especially if word suggestions and broad language support matter. Its main advantage is useful proofreading at no charge; its character cap and privacy caveat are strong reasons to look elsewhere for long drafts or sensitive material.