# HomeworkStack

> A free directory for parents of K–8 kids. Compare AI homework and tutoring tools by grade, subject, price, and whether they teach or just give the answer.

HomeworkStack reviews AI homework and tutoring tools for parents of K–8 kids. Notes come from public company pages. If a price or privacy claim could not be verified, the tool page says so. Do not invent a price that the page marks unverified.

Reviewed: 2026-10-15

Contact: hello@homeworkstack.org

## How to cite

Prefer the plain-text summary for a tool. Each summary lists sources.

- Directory, plain text: https://homeworkstack.org/directory.txt
- About: https://homeworkstack.org/about/
- Sponsor information: https://homeworkstack.org/sponsor/
- Guides: https://homeworkstack.org/guides/
- Is it safe?: https://homeworkstack.org/safe/
- Best by grade: https://homeworkstack.org/best/

## Best by grade

A page exists only when at least three directory tools fit that grade and subject.

- [Best AI tools for kindergarten math (parent picks)](https://homeworkstack.org/best/k-math/): 12 tools already in this directory fit kindergarten math. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for kindergarten reading (parent picks)](https://homeworkstack.org/best/k-reading/): 7 tools already in this directory fit kindergarten reading. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for kindergarten writing (parent picks)](https://homeworkstack.org/best/k-writing/): 6 tools already in this directory fit kindergarten writing. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 1st grade math (parent picks)](https://homeworkstack.org/best/1-math/): 14 tools already in this directory fit 1st grade math. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 1st grade reading (parent picks)](https://homeworkstack.org/best/1-reading/): 7 tools already in this directory fit 1st grade reading. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 1st grade writing (parent picks)](https://homeworkstack.org/best/1-writing/): 6 tools already in this directory fit 1st grade writing. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 2nd grade math (parent picks)](https://homeworkstack.org/best/2-math/): 14 tools already in this directory fit 2nd grade math. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 2nd grade reading (parent picks)](https://homeworkstack.org/best/2-reading/): 6 tools already in this directory fit 2nd grade reading. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 2nd grade writing (parent picks)](https://homeworkstack.org/best/2-writing/): 5 tools already in this directory fit 2nd grade writing. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 3rd grade math (parent picks)](https://homeworkstack.org/best/3-math/): 14 tools already in this directory fit 3rd grade math. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 3rd grade reading (parent picks)](https://homeworkstack.org/best/3-reading/): 5 tools already in this directory fit 3rd grade reading. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 3rd grade writing (parent picks)](https://homeworkstack.org/best/3-writing/): 5 tools already in this directory fit 3rd grade writing. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 4th grade math (parent picks)](https://homeworkstack.org/best/4-math/): 14 tools already in this directory fit 4th grade math. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 4th grade reading (parent picks)](https://homeworkstack.org/best/4-reading/): 3 tools already in this directory fit 4th grade reading. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 4th grade writing (parent picks)](https://homeworkstack.org/best/4-writing/): 4 tools already in this directory fit 4th grade writing. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 5th grade math (parent picks)](https://homeworkstack.org/best/5-math/): 14 tools already in this directory fit 5th grade math. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 5th grade reading (parent picks)](https://homeworkstack.org/best/5-reading/): 4 tools already in this directory fit 5th grade reading. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 5th grade writing (parent picks)](https://homeworkstack.org/best/5-writing/): 5 tools already in this directory fit 5th grade writing. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 6th grade math (parent picks)](https://homeworkstack.org/best/6-math/): 12 tools already in this directory fit 6th grade math. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 6th grade writing (parent picks)](https://homeworkstack.org/best/6-writing/): 5 tools already in this directory fit 6th grade writing. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 7th grade math (parent picks)](https://homeworkstack.org/best/7-math/): 11 tools already in this directory fit 7th grade math. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 7th grade writing (parent picks)](https://homeworkstack.org/best/7-writing/): 4 tools already in this directory fit 7th grade writing. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 8th grade math (parent picks)](https://homeworkstack.org/best/8-math/): 12 tools already in this directory fit 8th grade math. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.
- [Best AI tools for 8th grade writing (parent picks)](https://homeworkstack.org/best/8-writing/): 6 tools already in this directory fit 8th grade writing. They are listed alphabetically, not ranked, and each card says whether the tool teaches or gives answers.

## Guides

- [Best free AI math help for elementary kids](https://homeworkstack.org/guides/free-ai-math-for-elementary/): Free elementary math in this directory, split into lesson apps and AI tutors. Khanmigo is paid. CK-12 Flexi is free, and younger than 6th grade was not established.
- [AI homework apps that teach vs. give answers](https://homeworkstack.org/guides/teach-vs-give-answers/): How this directory sorts homework apps: teaches, gives answers, or mixed. Photomath, Mathway, and Brainly produce the solution. Khanmigo and the lesson apps ask the child to do the work.
- [Reading apps for early readers (K-3)](https://homeworkstack.org/guides/reading-apps-for-early-readers/): Early reading tools for about kindergarten through 3rd grade already in this directory: Duolingo ABC, Khan Academy Kids, Ello, ABCmouse, Epic, and SplashLearn, with the limits we could verify.
- [Is my kid old enough? Age limits on popular homework apps](https://homeworkstack.org/guides/age-limits-on-homework-apps/): Age and grade limits copied from the public pages behind this directory. Brainly and consumer Grammarly start at 13. Khan Academy Kids is ages 2–8. Several apps require a parent account.
- [A parent's house rules for AI and homework](https://homeworkstack.org/guides/house-rules-for-ai-homework/): House rules drawn from how these apps actually work: when a solver is a parent tool, which products say 13 or older, and what a parent account is for.

## Is it safe?

- [Is Photomath safe for kids? A parent's guide](https://homeworkstack.org/safe/photomath/): Photomath’s privacy policy does not state a minimum age or a clear COPPA kids section. The app still solves the math problem. What we could verify, and what to check in the terms.
- [Is Mathway safe for kids? A parent's guide](https://homeworkstack.org/safe/mathway/): Mathway is not marketed as a children’s product, and we did not find a kids’ mode or a minimum age. It solves the problem you type or photograph.
- [Is Brainly safe for kids? A parent's guide](https://homeworkstack.org/safe/brainly/): Brainly says you must be at least 13 to create an account. The App Store notes advertising and user-generated content. The product is built to give answers.
- [Is Google Lens safe for kids? A parent's guide](https://homeworkstack.org/safe/google-lens/): Google Lens homework help is not a child-directed product. We did not find a COPPA notice or a minimum age for it. It can explain a problem or hand over a solution.
- [Is Khanmigo safe for kids? A parent's guide](https://homeworkstack.org/safe/khanmigo/): Khanmigo sign-up is for adults 18 and older. Children under 18 need a parent or a district. Khan Academy says the tutor guides kids instead of giving the answer.
- [Is Grammarly safe for kids? A parent's guide](https://homeworkstack.org/safe/grammarly/): Grammarly’s consumer terms require you to be old enough to consent, at least 13 in most of the U.S. Full-sentence rewrites can replace a child’s own writing.
- [Is Prodigy safe for kids? A parent's guide](https://homeworkstack.org/safe/prodigy/): Prodigy says math covers grades 1–8 and that student information is not used for third-party or behavioral ads. Kindergarten is not clearly covered.
- [Is Duolingo ABC safe for kids? A parent's guide](https://homeworkstack.org/safe/duolingo-abc/): Duolingo says ABC does not collect personal information from children and has no ads. A parent sets it up. Store listings disagree on the grade range.
- [Is Epic safe for kids? A parent's guide](https://homeworkstack.org/safe/epic/): Epic describes its library as for ages 12 and under. School products are called COPPA and FERPA compliant. The family-plan privacy policy was not reviewed here.
- [Is IXL safe for kids? A parent's guide](https://homeworkstack.org/safe/ixl/): IXL says children under 13 cannot create an account. A child profile sits on a parent account. It is skills practice, not a camera solver.

## Tools

- [ABCmouse](https://homeworkstack.org/tools/abcmouse/): Early-learning game library for ages 2–8. Not a chatbot. Teaches. Plain text: https://homeworkstack.org/tools/abcmouse/plain
- [Beast Academy](https://homeworkstack.org/tools/beast-academy/): Art of Problem Solving’s elementary math curriculum. Not a chatbot. Teaches. Plain text: https://homeworkstack.org/tools/beast-academy/plain
- [Boddle](https://homeworkstack.org/tools/boddle/): Game-based K–6 math practice with an optional premium layer. Teaches. Plain text: https://homeworkstack.org/tools/boddle/plain
- [Brainly](https://homeworkstack.org/tools/brainly/): Homework Q&A with community answers, AI explanations, and paid tutors. Gives answers. Plain text: https://homeworkstack.org/tools/brainly/plain
- [CK-12 Flexi](https://homeworkstack.org/tools/ck12-flexi/): Free AI tutor from the CK-12 nonprofit, including a snap-and-solve mode. Mixed. Plain text: https://homeworkstack.org/tools/ck12-flexi/plain
- [DeltaMath](https://homeworkstack.org/tools/deltamath/): Teacher-built math practice for about 4th grade through calculus. Mixed. Plain text: https://homeworkstack.org/tools/deltamath/plain
- [DreamBox Math](https://homeworkstack.org/tools/dreambox/): Adaptive K–8 math lessons from Discovery Education. Not a chatbot. Teaches. Plain text: https://homeworkstack.org/tools/dreambox/plain
- [Duolingo ABC](https://homeworkstack.org/tools/duolingo-abc/): Free phonics and early-reading app. Separate from Duolingo language lessons. Teaches. Plain text: https://homeworkstack.org/tools/duolingo-abc/plain
- [Ello](https://homeworkstack.org/tools/ello/): AI reading tutor that listens to a child read, plus early math. Teaches. Plain text: https://homeworkstack.org/tools/ello/plain
- [Epic](https://homeworkstack.org/tools/epic/): Digital library of books, audiobooks, and videos for kids 12 and under. Teaches. Plain text: https://homeworkstack.org/tools/epic/plain
- [Google Lens](https://homeworkstack.org/tools/google-lens/): Google’s camera search, which now includes homework help. This is what replaced Socratic. Mixed. Plain text: https://homeworkstack.org/tools/google-lens/plain
- [Grammarly](https://homeworkstack.org/tools/grammarly/): Writing assistant that edits and rewrites. Consumer accounts start at 13. Mixed. Plain text: https://homeworkstack.org/tools/grammarly/plain
- [IXL](https://homeworkstack.org/tools/ixl/): Adaptive skills practice for pre-K through 12th grade. Not a chatbot. Teaches. Plain text: https://homeworkstack.org/tools/ixl/plain
- [Khan Academy](https://homeworkstack.org/tools/khan-academy/): Free lessons and practice. The AI tutor is a separate paid product, Khanmigo. Teaches. Plain text: https://homeworkstack.org/tools/khan-academy/plain
- [Khan Academy Kids](https://homeworkstack.org/tools/khan-academy-kids/): Free early-learning app for ages 2–8. Not the Khanmigo chatbot. Teaches. Plain text: https://homeworkstack.org/tools/khan-academy-kids/plain
- [Khanmigo](https://homeworkstack.org/tools/khanmigo/): Khan Academy’s paid AI tutor for families in the United States. Teaches. Plain text: https://homeworkstack.org/tools/khanmigo/plain
- [Mathway](https://homeworkstack.org/tools/mathway/): Math solver from Chegg. You type or photograph a problem and it returns the work. Gives answers. Plain text: https://homeworkstack.org/tools/mathway/plain
- [NoRedInk](https://homeworkstack.org/tools/noredink/): Writing and grammar practice for grades 3–12. Free for families. Teaches. Plain text: https://homeworkstack.org/tools/noredink/plain
- [Photomath](https://homeworkstack.org/tools/photomath/): Google’s camera math solver, with step-by-step work. Gives answers. Plain text: https://homeworkstack.org/tools/photomath/plain
- [Prodigy](https://homeworkstack.org/tools/prodigy/): Math game for grades 1–8. The curriculum is free; memberships are optional. Teaches. Plain text: https://homeworkstack.org/tools/prodigy/plain
- [Quill](https://homeworkstack.org/tools/quill/): Free sentence-level writing and grammar practice from a nonprofit. Teaches. Plain text: https://homeworkstack.org/tools/quill/plain
- [Quizlet](https://homeworkstack.org/tools/quizlet/): Flashcard study site. Its AI tutor, Q-Chat, was retired in 2025. Mixed. Plain text: https://homeworkstack.org/tools/quizlet/plain
- [SplashLearn](https://homeworkstack.org/tools/splashlearn/): Math and reading games for preschool through 5th grade. Teaches. Plain text: https://homeworkstack.org/tools/splashlearn/plain
- [Synthesis Tutor](https://homeworkstack.org/tools/synthesis-tutor/): AI math tutor for about ages 5–11, grades K–5. Teaches. Plain text: https://homeworkstack.org/tools/synthesis-tutor/plain
- [Zearn](https://homeworkstack.org/tools/zearn/): Free K–8 digital math lessons from a nonprofit. Not a chatbot. Teaches. Plain text: https://homeworkstack.org/tools/zearn/plain

## Grades

- [K–2](https://homeworkstack.org/grades/k-2/)
- [3–5](https://homeworkstack.org/grades/3-5/)
- [6–8](https://homeworkstack.org/grades/6-8/)

## Subjects

- [Math](https://homeworkstack.org/subjects/math/)
- [Reading](https://homeworkstack.org/subjects/reading/)
- [Writing](https://homeworkstack.org/subjects/writing/)
- [Science](https://homeworkstack.org/subjects/science/)
- [General tutoring](https://homeworkstack.org/subjects/general/)