Alnnahwi.com Review (2025): The Best Free Arabic AI Grammar Checker?

Finding a reliable Arabic AI grammar and spelling checker can be a challenge.

While tools like Qalam.ai and Sahehly.com offer powerful features, I’ve recently found my go-to solution: Alnnahwi.com.

Alnnahwi.com has quickly become my favorite Arabic AI proofreading tool because it’s incredibly fast, completely free to use, requires no registration, and, most importantly, has proven to be highly accurate in my tests. If you’ve ever stared at an Arabic sentence you’ve written, wondering if it’s truly correct, this tool is for you.

The beauty of the Arabic language, with its rich grammar (an-Naḥw – اَلنَّحْوُ) and intricate rules, can sometimes be a challenge. We all want our writing to be clear, professional, and free of mistakes. That’s why I’m so pleased to share this wonderful website that feels tailor-made for our community.

Think of it as your personal Arabic grammar and spelling assistant, available whenever you need it.

By the way: It looks as though all the obvious internet domains were already snapped up, so the developer ultimately resorted to a rather unconventional romanization of the Arabic term النَّحْوِيّ. In Arabic, نَحْوِيّ (naḥwiyy) is the nisba-adjective (نِسْبةٌ) from نَحْوٌ (direction; way; grammar), and it carries the sense grammatical or (the) grammarian.

What is Alnnahwi.com?

Alnnahwi.com is a powerful online platform designed to check and perfect your Arabic texts.

The interface is clean, modern, and incredibly easy to use. You simply paste (Laṣq – لَصْق) your text into the box labeled اُدْخُل النَّصَّ الْمُرَادَ تَدْقِيقُهُ, which means “Enter the text to be proofread.”

You have two powerful options.

1. You can click the main button for Tadqīq (تَدْقِيق), which means “Check” or “Proofread.”
2. Or, you can choose the second option, Taḥsīn (تَحْسِين), which means “Improve” or “Enhance.” This is a fantastic feature, suggesting the tool doesn’t just fix errors but can also help refine your style.

After the analysis, the corrected text appears in the second box, ready to be copied (Naskh – نَسْخ).

The Smart Technology Behind the Scenes

You might be wondering how it works so effectively. This is far more than a simple spell-checker. The creator of Alnnahwi, a developer named Bahjat Al Mostafa, has built a truly intelligent system.

It uses state-of-the-art Artificial Intelligence and Natural Language Processing, specifically a fine-tuned version of Google’s powerful “Gemma” AI model.

• This means the tool doesn’t just look for typos; it understands the structure and meaning of your sentences.
• It can detect hundreds of different types of mistakes, from complex grammatical errors to issues with spelling (Imlā’ – إِمْلَاء) and punctuation.

It’s a fantastic resource for anyone writing in Modern Standard Arabic (al-Fuṣḥā – اَلْفُصْحَى).

More Than a Tool: A Learning Resource

Beyond its core proofreading function, the website also features a valuable blog with useful articles about writing in Arabic. This section offers tips and deepens your understanding of grammar.

For example, you can find posts on essential topics such as “Punctuation in Arabic,” detailed explanations of the “Sound Masculine Plural” (جَمْعُ الْمُذَكَّرِ السَّالِم) and the “Sound Feminine Plural” (جَمْعُ الْمُؤَنَّثِ السَّالِم), and even an article on “The Lam of Justification” (لَامُ التَّعْلِيلِ).

The blog even explores why error-free writing is so important, making it a well-rounded resource for any serious writer.

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How good is Alnnahwi.com?

I had some texts reviewed and was thrilled with the results. I’ve selected four typical errors for our review. We’ll see if the “Alnnahwi” tool detects them.

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Test 1: Incorrect Adjective Agreement (Non-Human Plural)

This is one of the most common mistakes for learners. In Arabic, non-human plurals are grammatically treated as feminine singular.

Sentence with Mistake:

.رأيت البيوت الكبار في القرية

I saw the big houses in the village.

Explanation of the Mistake:

The word for “houses” (اَلْبُيُوت) is a non-human plural (جَمْعُ غَيْرِ الْعَاقِل). The adjective “big” (اَلْكِبَار) is in the human plural form. For correct agreement, the adjective must be in the feminine singular form (اَلْكَبِيرَة). The tool should suggest this change.

Suggestion of alnnahwi.com:

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Test 2: Incorrect Case after إنَّ (Inna)

The particles known as إِنَّ وَأَخَوَاتُهَا (“Inna and her sisters“) change the grammatical case of the noun that follows them. This is a fundamental rule of formal Arabic.

Sentence with Mistake:

.إنَّ اللاعبُ مستعدٌ للمباراة

Indeed, the player is ready for the match.

Explanation of the Mistake:

The particle إِنَّ requires the subject following it (“the player” – اَللَّاعِبُ) to be in the accusative case (مَنْصُوب). The sentence incorrectly uses the nominative case (مَرْفُوع). The tool should correct اللاعبُ (al-lāʿibu) to اللاعبَ (al-lāʿiba).

Suggestion of alnnahwi.com:

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Test 3: Incorrect Plural Form for a Direct Object

For sound masculine plurals (جَمْعُ الْمُذَكَّرِ السَّالِم), the grammatical case is shown by changing the ending from -ūn to -īn. This is another frequent point of error.

Sentence with Mistake:

.كافأ المديرُ المعلمون على جهودهم

The manager rewarded the teachers for their efforts.

Explanation of the Mistake:

“The teachers” (اَلْمُعَلِّمُون) is the direct object (اَلْمَفْعُولُ بِهِ) of the verb “rewarded” (كَافَأَ), so it must be in the accusative case. The form المعلمون (-ūn) is nominative. The correct accusative form is المعلمين (-īn). A good grammar checker should identify this and suggest the correction.

Suggestion of alnnahwi.com:

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Test 4: Incorrect Spelling of the Medial Hamza

The rules for writing the hamza (ء) in the middle of a word are famously tricky and depend on the surrounding vowels. This is a very common source of spelling errors.

Sentence with Mistake:

طرح الصحفي أىسألة مهمة على الوزير.

The journalist asked important questions to the minister.

Explanation of the Mistake:

The mistake is in the spelling of the word for “questions”. The correct spelling is أَسْئِلَة. The rule for the medial hamza (اَلْهَمْزَةُ الْمُتَوَسِّطَة) is based on a hierarchy of vowel strength (kasra > damma > fatha > sukun). In أَسْئِلَة, the hamza has a kasra (i-sound), which is the strongest vowel. Therefore, its “seat” must be a nabirah (ئ), not an alif (أ). The tool should detect this specific orthographic rule.

Suggestion of alnnahwi.com:

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Interview with Bahjat Al Mustafa

Can you introduce yourself?

My name is Bahjat Al Mustafa (بهجت المصطفى). I’ve worked for about 10 years as a software developer in Berlin and Istanbul for companies like HelloFresh and Rocket Labs.

My motivation for creating this program came last year when I started writing a novel in Arabic and realized there wasn’t an accurate Arabic grammar and spelling checker available. That’s when I decided to try and build one.

How does alnnahwi.com work?

The program uses an open-weight artificial intelligence model. This model was specifically fine-tuned for correcting Arabic texts. You can find the fine-tuned model and a detailed explanation at this link.

What mistakes are detected?

The initial version of the model can detect many grammatical and spelling errors. It’s particularly good at accurately identifying spelling and typographical errors.

Can alnnahwi.com be used for free?

Yes, the language correction model is open-weight and available under a license that allows users to modify, publish, and use it for commercial purposes. I’m also working on releasing a rephrasing model as an open model.

The web application is free to use and will remain so. I’m also developing a text editor for longer texts, which will have its basic features available for free.

Compared to other tools, what does alnnahwi.com do better or differently?

What sets Al-Nahwi apart is that it offers open-weight Arabic language models, unlike other tools such as qalam.ai or sahehly, which don’t publish their models. I encourage users to try it out and compare its accuracy with other tools.

We’re also working on building a future-oriented Arabic text editor interface that will use AI agents to assist you while editing.

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Drißner, G. (2025, August 9). Alnnahwi.com Review (2025): The Best Free Arabic AI Grammar Checker?. Arabic for Nerds. https://arabic-for-nerds.com/tools/alnnahwi-review/

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Published: August 9, 2025

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Publication ISSN: 3055-1730