AI quiz solver and homework helper that explains every answer.

ExamNinja is an AI quiz solver and homework helper for Chrome. Get step-by-step explanations and answer checking for permitted practice quizzes, review, and coursework.

Add to Chrome — Free Try the quiz solver

5 answers daily No credit card Privacy details

Only the question context needed for an answer is submitted. Do not enter personal data, private assessments, or access codes.

1Install the Chrome extension
2Choose a permitted practice question
3Review and verify the explanation

canvas.edu/practice/review

Question 7 of 20

What is the derivative of (x + 1)² with respect to x?

A. 2x² + 4x − 2

B. x² + 2x + 1

C. 2x + 2Ninja pick

D. 2x² − 4x + 2

Explanation generated

Ready to review

Explanation ready

Guides for major learning platforms

Canvas LMS study guide Blackboard study guide Moodle study guide D2L Brightspace study guide

View all 23 supported platforms →

The playbook

How it works

Open a supported text question, ask for help, then read and verify the reasoning. ExamNinja stays inside the browser workflow you already use.

Open your quiz

Open a supported practice or homework page and start with one focused question.

Double-click the question

Double-click the question so ExamNinja can identify the relevant text and context.

Review the answer and reasoning

Review the suggested answer and explanation, then verify important work against your course material.

Supported question formats

See how ExamNinja handles different questions

These four examples are interactive. Tap “Show answer” or double-click a card to see a suggested response for multiple-choice, multiple-select, graph-based, and matching questions.

Tap “Show answer” to try it

Multiple Choice

What is the derivative of (x + 1)² with respect to x?

A. 2x² + 4x − 2

B. x² + 2x + 1

C. 2x + 2

D. 2x² − 4x + 2

Multiple Select

Which organelles are involved in protein synthesis?

A. Nucleus

B. Mitochondria

C. Ribosomes

D. Cell wall

Fill in the Blank

Estimate the slope of the curve y = x² at x = 3.

The slope at x = 3 is

Matching

Match each molecule to its role in photosynthesis.

CO₂

H₂O

O₂

C₆H₁₂O₆

Free study tools

Try ExamNinja before you install

Paste one focused question, inspect the explanation, and verify important work against your course material.

Quiz questions

AI quiz solver

Get an answer, reasoning steps, and limits to check.

Answer choices

Multiple-choice solver

Compare the choices and understand why one fits best.

Verification

Answer checker

Check your proposed answer and find gaps in the reasoning.

Step-by-step help

Homework helper

Work through one focused question with a clear explanation.

Explore all free tools →

Choose how you learn

The right level of explanation

Pick the response style that fits your study session—from a concise answer check to a full worked explanation.

Study workspace Review mode

Worked explanation

Explain the role of ribosomes in protein synthesis.

Explanation — Ribosomes translate mRNA into amino-acid chains that form proteins.

Reasoning included

Evidence-based study guides

Direct answers to the questions students actually ask

Each guide starts with a concise answer, then explains the evidence, configuration-dependent details, limitations, and practical next steps.

Canvas

Can Canvas detect tab switching?

What standard quiz logs show—and what depends on other software.

LMS activity

Online quiz logs explained

A practical distinction between LMS events and monitoring tools.

Answer checking

Check multiple-choice answers

Test the stem, eliminate distractors, and verify the final choice.

AI reliability

Verify AI-generated answers

Check assumptions, calculations, sources, and course conventions.

Browse all guides → Meet the editorial team Read our research methodology

From the ExamNinja blog

Practical AI study advice, backed by evidence

Detailed workflows, privacy checks, and honest comparisons built from primary sources—not unsupported accuracy claims or recycled study tips.

Read all blog posts →

Tool evaluation

Best AI study tools for online coursework

A task-first scorecard and repeatable 10-question test for choosing useful tools.

Study support

AI homework helper or a tutor?

Where AI, tutoring, office hours, and textbooks each provide the most value.

AP exam preparation

An AP exam study workflow with AI

Combine official materials, retrieval practice, an error log, and targeted explanations.

Student privacy

Privacy checklist for AI study tools

Check permissions, data handling, retention, deletion, and payment details.

Browse the ExamNinja blog → How we source and review content Corrections policy

Know before you install

Clear limits, honest study support

ExamNinja is built for permitted practice, review, and coursework. Course instructions and institutional policies always come first.

Supported input

Text-based multiple-choice, multiple-select, short-answer, matching, and focused homework questions.

Not supported yet

Image uploads and PDF uploads are not supported. Missing diagrams or context can change an answer.

Payment control

Choose monthly or annual billing inside the extension. Cancel a paid plan whenever you need to.

Permitted use

Use ExamNinja only where outside assistance is allowed, and verify important work against official course sources.

Read how ExamNinja handles submitted questions →

One plan, two billing options

Pick how you pay

Install ExamNinja free, then choose monthly or yearly billing inside the extension when you need more answers.

Monthly

$8.99 /month

Full access, billed monthly. Cancel whenever you like.

Install free

AI-assisted explanations Supported text question formats Concise, hint, and worked responses Browser-based study workflow Email support

Ready when you are.

Install the extension, open a supported study question, and learn from a clear explanation.

Add to Chrome — Free See how it works

The honest answers

Questions? Answered.

ExamNinja is an AI quiz solver and homework helper for Chrome. It helps with supported text-based study questions by providing a suggested answer, explanation, and reasoning to verify. See how the Chrome extension works.

ExamNinja is best suited to text-based multiple-choice, multiple-select, short-answer, fill-in-the-blank, matching, and focused homework questions. Image and PDF uploads are not supported in the first version. Try the free multiple-choice solver with a text question.

ExamNinja supports browser-based study workflows on Canvas, Blackboard, Moodle, and D2L Brightspace. Compatibility depends on the page, question type, institution configuration, and course rules.

No. ExamNinja does not control LMS logs, secure browsers, monitoring software, proctoring products, or course policies. Use it only for practice, review, and coursework where outside help is allowed. Read how online quiz logs work.

Yes. Ambiguous wording, missing context, diagrams, calculations, and course-specific conventions can change an answer. Verify important work against course materials or authoritative sources. Use our AI answer verification checklist.

Yes. The website includes free text-based quiz, multiple-choice, answer-checking, and homework tools. The Chrome extension also starts with a free allowance and does not require a credit card to begin.

The web tools are designed not to persist raw submitted question text or raw IP addresses. Operational records are limited to request status, tool type, a content hash, provider usage, and latency. Review the current privacy policy for details.

Try a free web tool or open the Chrome extension page, add ExamNinja to Chrome, sign in, and follow the setup instructions. Always follow your school and course rules.