Free tool
Free grammar checker,
the real engine.
Type or paste Arabic text and the same engine behind app.lisan.com underlines every issue, explains the rule, and fixes it in a click. No sign-up for the demo.
The same engine that powers app.lisan.com, checking your text as you type. Nothing is stored; the demo covers Arabic up to 1500 characters.
Beyond the checker
The number one Arabic checker does so much more.
Instant proofreading
Twelve error types across spelling, grammar, morphology, semantics, style, punctuation, and names, flagged as you type with the rule explained.
How proofreading works →Eight AI agents
Paraphrase, summarize, expand, tashkeel, humanize, detect AI text, or draft the email, each agent tuned for one job in the full editor.
Meet the agents →Your style guide
Institutional rules fire while people type: dignitary titles, Hijri dates, approved terminology, editorial policy.
Explore style guides →Why Arabic needs its own checker
Grammar checkers built for English stop at the surface.
Arabic is a root-and-pattern language: the same three letters spell dozens of words, hamzas move with grammar, and case endings change meaning. A checker that only matches dictionaries misses most of it. WriteX models morphology and semantics as their own categories, which is why it catches errors Microsoft Word never sees.
- Hamza placement rules with the pedagogy behind each fix.
- Number agreement, genitive case, and the traps professionals still fall into.
- Proper names checked against a knowledge base, not a wordlist.
On the company benchmark sentence, Microsoft Word flags 2 errors; WriteX flags 6, each with the grammatical rule explained.
Frequently asked questions
Is this really the production engine?
Yes. Text you type here is checked by the same WriteX engine that serves app.lisan.com; the suggestions and explanations are its real output, not a canned demo. The page demo is capped at 1500 characters; the full editor has no such limit.
Is my text stored?
No. The demo passes your text to the engine for checking and returns the suggestions. Nothing you type on this page is saved to a document or used to train anything.
Does the free checker handle English and Spanish?
The on-page demo checks Arabic, WriteX's flagship language. The full editor also corrects English at sentence level and Spanish through the Correcto models; start free and try all three.
Every word your institution writes, checked.
Official letters to social posts, Arabic to English to Spanish. One assistant that proofreads, enforces your style, and explains every correction, wherever your teams write.
12 error types · Institutional style guides · Works in Office, browsers, and the web editor