NudgeLearn Grader vs CoGrader
If your grading load is essays, typed or handwritten, and you want the largest free tier, CoGrader is the stronger pick and we will say so. Choose us when the page has working on it: multi-step math, a lab sheet, a diagram, a problem set where the marks belong next to the step that went wrong.
The most established AI essay grader aimed squarely at K-12. Strong on essays against a rubric, with a large preloaded state-rubric set and the compliance paperwork schools ask for. It now grades handwritten essays from a photo or scan as well, with visuals, diagrams, charts and graphics excluded.
What CoGrader costs
Starter is free with 100 student submissions a month. Standard is $15/month billed annually ($19 monthly) for 350 submissions. Schools and districts are priced by size.
Verified on 2026-08-22 from CoGrader pricing, CoGrader help centre: what file types CoGrader grades. NudgeLearn is free for 20 graded items a month, then $30/month ($25 billed yearly) for 400, or $50/month ($42 billed yearly) for 1,000.
Where CoGrader is the better choice
- A more generous free tier: 100 submissions a month against our 20.
- Cheaper at the paid tier: $15/month annually for 350 submissions, against our $30/month ($25 annually) for 400.
- SOC 2 Type 1, which we do not have. If your district requires it, that decides it today.
- A much larger installed base and the review history that comes with it.
Where we are the better choice
- Their handwriting support is text only: their own help centre states that visuals, diagrams, charts and graphics are not supported. We read the working itself, including multi-step math and pages with figures on them.
- We mark the student’s own page rather than returning separate feedback, so the student sees corrections where they made the mistake.
- Per-question analytics by student, class, and assignment, rather than per-essay scores.
- One tool for both: worksheets and problem sets alongside rubric-graded essays, instead of an essay tool plus something else for everything else.
The short answer
If your grading load is essays, typed or handwritten, and you want the largest free tier, CoGrader is the stronger pick and we will say so. Choose us when the page has working on it: multi-step math, a lab sheet, a diagram, a problem set where the marks belong next to the step that went wrong.
What we are actually built for
Handwritten, multi-step work that has to be read rather than pattern-matched: a page of worked algebra, a lab write-up, a paragraph response, marked directly on the student’s own page, with the per-question record kept by student, class, and assignment.
The grader works each problem out itself rather than matching an answer key, so it needs no key and accepts any equivalent form. Anything it cannot read clearly is flagged for you to confirm rather than guessed, and you can override any result. See how it works, read the measured accuracy and its limits, or start with the handwriting page. Free teacher resources: printable worksheets and step-by-step lessons.
CoGrader vs NudgeLearn, answered
Is NudgeLearn Grader better than CoGrader?
If your grading load is essays, typed or handwritten, and you want the largest free tier, CoGrader is the stronger pick and we will say so. Choose us when the page has working on it: multi-step math, a lab sheet, a diagram, a problem set where the marks belong next to the step that went wrong.
How much does CoGrader cost?
Starter is free with 100 student submissions a month. Standard is $15/month billed annually ($19 monthly) for 350 submissions. Schools and districts are priced by size. Verified on 2026-08-22.
Test it against your own papers
Run three or four real papers through and check the marks yourself. Free.
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