# CoGrader vs Scribbr

CoGrader records 142,008 monthly visits with +31.1% month-over-month growth and Freemium, Free Trial, Contact for Pricing, Free pricing. Scribbr records 7,530,803 monthly visits with +14.6% growth and Freemium pricing.

| Metric | [CoGrader](https://openaitools.app/tool/cograder) | [Scribbr](https://openaitools.app/tool/scribbr) |
| :--- | :--- | :--- |
| Website URL | https://cograder.com | https://www.scribbr.com |
| Categories | AI Checker Essay, AI Assistant, AI Teachers, AI Homework Helper | AI Writing, AI Proofreading, AI Plagiarism Checker, AI Writing Assistants |
| Pricing Model | Freemium, Free Trial, Contact for Pricing, Free | Freemium |
| Monthly Visits | 142,008 | 7,530,803 |
| MoM Growth Rate | +31.1% | +14.6% |
| Primary Market | United States | United States |
| Direct Visits | 66,666 | 2,472,819 |
| Review Score | 4.3 | 4.4 |
| Saved Count | 1 | 0 |
| Supported Platforms | Website | Website |

## CoGrader

CoGrader turns the slowest part of teaching into a few minutes of review. You import an assignment from Google Classroom, Canvas, Schoology, Brightspace, Blackboard, or a plain upload of PDF, DOCX, or photos of handwriting. Then you attach a rubric — one from the built-in library of 500+ standards-aligned rubrics, or your own — and CoGrader scores every submission against that rubric, writing a comment for each criterion that tells the student what worked and what to fix next.

What separates CoGrader from generic chatbots is the evidence layer. The team publishes a validation study against official Texas STAAR raters where scores landed within one point of a human rater in 98.3% of cases and matched exactly 80.4% of the time, alongside an IES research award from the U.S. Department of Education and field studies in real districts. Teachers still approve every score and comment before students see it, so the AI drafts and the educator decides.

Beyond the core grader there is handwriting support that sorts scanned pages by student, an originality checker for plagiarism and AI-written text, a rubric generator aligned to state standards, class dashboards showing which criteria the whole class struggled with, and free tools students can use on their own essays. It is used by a reported 100,000+ teachers across 16,000+ US schools.

**Pricing & Plans:** Freemium. The Starter plan is free forever for teachers and covers 150 student submissions per month, rubric building and sharing, FERPA compliance, and LMS integration. The Individual plan is $19/month, or $15/month billed annually, and raises the cap to 350 submissions with grammar checking, plagiarism and AI detection, and a class performance dashboard. Schools & Districts and Higher Ed & Enterprise plans are quoted based on size and add unlimited submissions, bulk user management, institution-wide analytics, API access, and onboarding. Educators can also earn the Individual plan free through the Advocate program.

- **Rubric-based AI grading:** Score essays and open-ended responses against your own rubric or one of 500+ standards-aligned rubrics, with a written comment for every criterion.
- **Handwritten assignment support:** Photograph paper essays from your phone or the copier, and CoGrader reads the handwriting, groups pages by student, and grades the whole set.
- **Two-way LMS sync:** Import submissions from Google Classroom, Canvas, Schoology, Brightspace, Blackboard, DMAC, and more, then push grades and feedback straight back.
- **Originality and AI detection:** Flag possible AI-assisted writing and check submissions for plagiarism before you return feedback.
- **Class analytics dashboard:** See average scores by criterion and surface which skills the class as a whole needs reteaching on.

**Strengths:** Validation against official state raters is published with numbers, not just claims; Teachers approve every score and comment before students see anything; Generous free tier and full LMS integrations make it easy to pilot; Handwriting support is rare and genuinely useful for paper-based classrooms

**Limitations:** Free tier caps out at 150 submissions per month, which heavy graders will exceed; Plagiarism and AI detection sit on the paid Individual plan; Some features are strongest for US standards, so non-US teachers get less from the rubric library

[Profile (Markdown)](https://openaitools.app/tool/cograder.md)

## Scribbr

Scribbr was built around a simple promise: help students submit work they feel confident about. The core of the service is human proofreading and editing, delivered by a hand-picked pool of academic editors who go through an in-house training programme before they are allowed to take orders. Documents are returned with tracked changes, in-text comments and a short personal letter explaining the reasoning behind the main edits.

Alongside the human service, Scribbr offers a growing library of AI writing tools. The Academic Check bundles together grammar and language review, citation checking, plagiarism scanning and AI-content detection into a single upload, which is convenient when you want one pass over an entire paper rather than juggling separate tools. Individual utilities such as the citation generator for APA, MLA, Chicago, AMA, IEEE and ACS, the paraphrasing tool and the text summarizer can be used on their own without paying for an edit.

The platform also maintains a large free knowledge base of academic writing guides that has become one of the more popular ways students discover the brand. Pricing depends heavily on document length, chosen turnaround time and add-on checks, so the practical way to get a number is to upload a file and select services in the order flow.

**Pricing & Plans:** Freemium model. Free tools include the citation generator, grammar checker and summarizer. Human proofreading and editing, the plagiarism checker, AI detector, AI proofreader and Academic Check are paid per document, with the final price depending on page count, delivery speed and any add-on checks such as structure or clarity review.

- **Human proofreading and editing:** A vetted academic editor reviews your paper within hours and returns tracked changes, comments and an explanation letter.
- **Plagiarism checker:** Scans your document against a large web and publication database to surface potentially unoriginal passages before submission.
- **AI detector and AI humanizer:** Flags text likely generated by large language models and offers a rewriting mode aimed at making AI-assisted drafts sound more natural.
- **Citation generator:** Creates and verifies references in APA, MLA, Chicago, AMA, IEEE and ACS styles from a URL, DOI or title search.
- **Academic Check bundle:** Runs grammar, citations, clarity, plagiarism and AI-detection checks in a single upload of the whole document.

**Strengths:** Combines human editors with AI tools rather than relying on one alone; Strong editorial vetting process and a large pool of academic specialists; Free citation generator and knowledge base are genuinely useful on their own; Transparent turnaround options starting from a few hours

**Limitations:** Paid services are priced per document, which adds up for long theses; AI detector verdicts can still be disputed by institutions; Some premium checks require you to buy them alongside an editing order

[Profile (Markdown)](https://openaitools.app/tool/scribbr.md)

## Frequently Asked Questions

### How do CoGrader and Scribbr compare in monthly traffic?

CoGrader has 142,008 monthly visits, while Scribbr has 7,530,803. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

CoGrader has a month-over-month growth rate of +31.1%; Scribbr has +14.6%.

### How does pricing compare?

CoGrader: Freemium, Free Trial, Contact for Pricing, Free. Freemium. The Starter plan is free forever for teachers and covers 150 student submissions per month, rubric building and sharing, FERPA compliance, and LMS integration. The Individual plan is $19/month, or $15/month billed annually, and raises the cap to 350 submissions with grammar checking, plagiarism and AI detection, and a class performance dashboard. Schools & Districts and Higher Ed & Enterprise plans are quoted based on size and add unlimited submissions, bulk user management, institution-wide analytics, API access, and onboarding. Educators can also earn the Individual plan free through the Advocate program. Scribbr: Freemium. Freemium model. Free tools include the citation generator, grammar checker and summarizer. Human proofreading and editing, the plagiarism checker, AI detector, AI proofreader and Academic Check are paid per document, with the final price depending on page count, delivery speed and any add-on checks such as structure or clarity review.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Grammarly](https://openaitools.app/tool/grammarly) | 58,867,412 | -1.5% | Freemium | Delivers broader real-time grammar and tone correction across web apps, but lacks Scribbr's deep academic focus and citation formatting. | [.md](https://openaitools.app/tool/grammarly.md) |
| 2 | [QuillBot Paraphraser](https://openaitools.app/tool/quillbot-paraphraser) | 36,630,337 | +2.3% | Freemium | Provides robust paraphrasing and citation tools, but focuses less on comprehensive academic proofreading and human editing. | [.md](https://openaitools.app/tool/quillbot-paraphraser.md) |
| 3 | [ZeroGPT](https://openaitools.app/tool/zerogpt) | 32,864,541 | +19.7% | Freemium, Paid | AI content detection and a full writing toolkit in one place | [.md](https://openaitools.app/tool/zerogpt.md) |
| 4 | [GPTZero](https://openaitools.app/tool/gptzero-me) | 23,246,989 | +32.5% | Freemium, Paid | Focuses specifically on AI content detection and writing verification for educators, but lacks academic editing and proofreading workflows. | [.md](https://openaitools.app/tool/gptzero-me.md) |
| 5 | [LanguageTool](https://openaitools.app/tool/languagetool) | 5,707,795 | -4.2% | Freemium | AI grammar, spelling and style checker for 30+ languages | [.md](https://openaitools.app/tool/languagetool.md) |
| 6 | [MagicSchool AI](https://openaitools.app/tool/magicschool-ai) | 2,874,288 | +4.5% | Freemium, Free Trial, Contact for Pricing | AI tools that give teachers back their time | [.md](https://openaitools.app/tool/magicschool-ai.md) |
| 7 | [Originality.ai](https://openaitools.app/tool/originality) | 2,049,639 | +2.8% | Paid | Provides enterprise-grade AI detection and plagiarism checking, but does not offer human academic proofreading or citation generation. | [.md](https://openaitools.app/tool/originality.md) |
| 8 | [Jenni](https://openaitools.app/tool/jenni) | 1,498,133 | +5.2% | Freemium | Offers specialized academic writing assistance and AI citation generation, but lacks Scribbr's human proofreading and formal editing services. | [.md](https://openaitools.app/tool/jenni.md) |
| 9 | [Packback](https://openaitools.app/tool/packback-co) | 746,168 | -14% | Contact for Pricing | Make student thinking visible with AI-supported discussion and writing | [.md](https://openaitools.app/tool/packback-co.md) |
| 10 | [SchoolAI](https://openaitools.app/tool/school-ai) | 383,195 | +33.1% | Freemium, Contact for Pricing, Free | Builds interactive AI learning spaces for students rather than focusing strictly on automated essay grading. | [.md](https://openaitools.app/tool/school-ai.md) |

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Source: https://openaitools.app/compare/cograder-vs-scribbr

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