Best Free Homework Help Websites & Apps: Honest Comparison (2026)

A source-checked comparison of free homework help websites and apps for math, science, writing, and study support — with limits and academic-integrity guardrails.

The best homework help site depends on the kind of stuck you are. Sometimes you need a lesson. Sometimes you need to check one calculation. Sometimes you need feedback on a sentence or a real person to explain the mistake. Those are different needs, and treating every tool as an answer machine is how a useful resource becomes a shortcut that hurts you on the test.

This is an independent comparison based on the providers’ public information. The resources below are useful because they support understanding, checking, drafting, or exploration. None should be used to submit work you do not understand or to bypass your course rules.

Free Homework Help at a Glance

Resource	Best use	Basic free access	Account?	Use it honestly
Khan Academy	Lessons and practice	Core lessons and practice are free	Optional for basic access	Learn a skill, then attempt a new problem
[Wolfram	Alpha](https://www.wolframalpha.com/)	Checking math/science calculations	Basic personal web queries	Not normally
Desmos	Graphs and visual math	Interactive calculators are free	Optional	Explore a graph; do not confuse it with your teacher’s required method
Photomath	Step-by-step math support	Basic plan includes explanations	Not clearly required	Cover the answer and redo the method yourself
PhET	Science and math exploration	Simulations are free	No for students	Change one variable and explain what you observe
Purdue OWL	Writing, grammar, citations	Open-access guidance	No	Use the guide to revise your own draft
Grammarly	Basic proofreading	Free account plan	Yes	Decide whether a suggestion preserves your meaning
Hemingway Editor	Readability and clarity	Basic browser editor is free	No	Treat highlights as prompts, not rules
Crash Course	Fast topic review	Educational videos are free	No for viewing	Pause and take notes; it is a supplement, not a full course

Start With the Kind of Help You Need

If you do not understand the topic: choose instruction, not an answer tool

Khan Academy is a strong first choice for a missing foundation because it combines explanations with practice. Use it for math, science, or a skill that your notes have not made clear. A free account can save progress, but you can access the core learning material without one.

Crash Course is helpful when you need a fast, broad explanation in history, science, or another subject. Its videos move quickly, so pause regularly and write the main idea in your own words. Use them to orient yourself before returning to your class notes, textbook, or assigned reading.

If you need to check math: use a checker after your own attempt

Wolfram|Alpha can check a query, graph an equation, or help you explore a result. Basic web use is free for personal queries, but step-by-step solutions are generally a Pro feature. That limitation can actually encourage a better habit: show your own setup first, then compare the final result.

Desmos is useful when you need to see how an equation, table, or function behaves. You can use the calculators interactively without an account; sign in only if you want to save work to your account. A graph is evidence, not a complete written solution, so still explain what the graph shows.

Photomath offers a Basic plan with step-by-step explanations. Its extra visual aids and some additional “how” and “why” features are part of the paid tier, and the app needs an internet connection. Use it to identify the step you missed, then hide the phone and solve a similar problem from scratch.

If you need a science model: manipulate one variable at a time

PhET Interactive Simulations provides free interactive science and math simulations that students can use without an account. It is especially useful for a concept that needs a picture: circuits, forces, molecules, probability, or a graphing relationship.

Not every simulation has identical accessibility or feature support, so check the specific simulation before relying on it for an assignment. The study move that works best is simple: change one variable, predict what will happen, then explain the result in one sentence.

If you need writing help: keep your own voice and ideas

Purdue OWL is a free, open-access reference for writing, grammar, citations, plagiarism, and APA/MLA guidance. It is useful for learning a rule or confirming a citation format, not for generating the content of an assignment.

Grammarly has a free account plan for basic writing support. Advanced rewrites, plagiarism detection, and some AI features are limited or paid. Read every suggestion before accepting it because a grammatically smoother sentence can still change what you meant.

Hemingway Editor provides a free browser-based readability and style checker without an account. Its AI tools are trial or paid features. Do not try to remove every highlight: sometimes a longer sentence or a passive construction is the clearest choice in a specific context.

An Academic-Integrity Rule That Actually Helps

Try the problem first. If you get stuck, write down what you tried and the exact point where the process stopped making sense. Then use a resource to learn that step, close the resource, and redo the problem from the beginning. If you cannot reproduce the method without the tool open, you have not finished learning it yet.

Avoid sites or threads that hand over completed answers with no explanation. Copying may feel faster, but it leaves you with the same gap when the test is closed-book or your teacher asks you to explain your reasoning. For course-specific confusion that repeats, office hours, a tutoring center, a library program, or a study partner is often more valuable than another website.

A Better Homework Help Sequence

Read your notes, directions, and worked example first.
Spend ten focused minutes attempting the problem yourself.
Use a teaching resource such as Khan Academy, PhET, Purdue OWL, or Crash Course for the missing concept.
Use a checker such as Wolfram|Alpha, Desmos, or Photomath only after your attempt.
Redo a similar problem with no tool open.
Ask a real person if the same mistake appears again.

For grade math, our free Grade Calculator [blocked] can show a percentage and conventional letter grade. For a course with weighted categories, use the Weighted Average Calculator [blocked]. Neither replaces your teacher’s specific grading policy.

Frequently Asked Questions

Q: What is the best free homework help site for most students?

Start with Khan Academy when you need to learn a topic. Add a specific tool only when the task calls for it: Desmos for a graph, Purdue OWL for writing rules, or PhET for a science model.

Q: Are answer generators safe to use for homework?

They can create academic-integrity problems and often hide the skill you need to learn. Use explanations to understand a process, then complete your own work according to your instructor’s rules.

Q: Why might my teacher’s answer differ from a calculator or app?

Your class may use a different method, rounding rule, notation, or assumption. Bring your attempt and the explanation you used to your teacher or tutor and ask where the methods differ.

Q: What should I do after three explanations still do not make sense?

Stop collecting more tabs and ask a real person. A tutor, teacher, librarian, or classmate can see the exact step where your reasoning changes in a way a general website cannot.