ComposAI Grammar and Spell Checker
Extension Delisted
This extension is no longer available in the official store. Delisted on 2025-09-15.
Multilingual AI grammar and spell checker for Google Docs, Gmail, and your favorite sites.
Use the ComposAI Chrome extension to correct your grammar and spelling errors while you write on Google Docs, Gmail, Facebook, LinkedIn and many more websites. We currently support both spelling and grammar checking for English, Spanish, and French, with more languages to come.
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How We Are Better:
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★ 50% more corrections
Unlike Grammarly, LanguageTools, and Ginger, ComposAI is backed by AI research rather than linguistic expertise, which enables us to support more languages and correct up to 50% more grammar mistakes.
★ Multiple Languages
ComposAI is the only grammar checker that can correct complex grammar and spelling mistakes for English, Spanish, and French.
★ Contextual spell checker
ComposAI detects correctly spelled words used in the wrong context like (there/their/they’re) in English, (que/qué) in Spanish, and (de/des) in French.
★ Grammar checker
Our grammar checker uses the context to correct complex errors like conjugation, subject-verb agreement, gender agreement, prepositions, accents, and much more.
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Examples:
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★ English
- ComposAI will make sure your message, documents, and social media posts clear and free of grammar and spelling errors.
- ComposAI will make sure your {messages}, documents, and social media posts {are} clear and free of grammar and spelling errors.
★ Spanish
- El corrector de gramática ComposAI se eficiente qué las competidores.
- El corrector de gramática ComposAI {es más} eficiente {que los} competidores.
★ French
- Avec ComposAI, corrigez en temps réelle vos textes sur Gmail, WhatsApp, Facebook, est vos autres sites préférer.
- Avec ComposAI, corrigez en temps {réel} vos textes sur Gmail, WhatsApp, Facebook, {et} vos autres sites {préférés}.
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Data Privacy:
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★ We respect your privacy
While data is valuable for us, your privacy is more important to us. The ComposAI spell checker and grammar checker extension securely checks your text by sending your text to https://composai.com over an encrypted connection and will not store your text after the check is completed.
★ Help us improve
If you see a bad spelling or grammar check result and would like to report it to us:
1. Click the ComposAI icon at the top right corner of your Chrome browser.
2. Click the toggle next to “Report ignores to help us improve”.
3. Click “IGNORE” or “IGNORE ALL” on bad corrections to report them.
Please send additional feedback to: [email protected]
Latest reviews
可以，很牛逼
Es muy buena, me ayuda mucho con los trabajos de la U. La recomiendo
Es buena
It's alright. Most other apps get 33% of the grammar errors with my sample. This one got 50% accuracy. Others do it better though.
This is one of the best free editing programs that I found. This app has been so helpful editing my novel. It can be a little weird with longer files but all editing apps do that. Sometimes it finds a passage wrong but it doesn't understand why it is wrong. It still catches the mistakes that I would not have caught.
Great grammar checking, but every so often this jumps up to 90% CPU and stays there until I have to restart Chrome.
I love this app. It helps a lot.
This app is good for someone who has the grammar problems. For a starter not bad but price wise it's expensive. It has its own flaws. After checking the competition. Looks like every app has some flaws. This app did missed some words such as El TO AL name. Even writing this review the word "missed" did not get corrected. App suggests it should read as "did not miss".
Wow! This extension is awesome and FREE! Please keep up the awesome work!
I love this Real-Time grammar correcting tool. it's so simple to use and helps me checking & editing my work faster.
Way better than the rest (grammarly, etc). As a multilingual writer, this makes my life so much easier! You should definitely be using this if you speak English and Spanish and spend time or do business in USA and LatAm.
Works perfectly.It is even better than Grammarly premium and ComposAI is free.
Very helpful tool at work and daily life.
awesome
Great!
