The short answer
- Homework scanner apps photograph a problem and return a solution, usually with steps. The big names are Photomath (Google), Google Lens, Gauth, Brainly, Mathway (Chegg) and Symbolab.
- Free tiers are real but limited. Photomath’s free plan includes step-by-step explanations; Mathway and Symbolab keep the full or advanced steps behind a subscription.
- US list prices (Oct 14, 2026): Photomath Plus $9.99/month or $69.99/year; Gauth PLUS $11.99/month, $31.99/quarter or $99.99/year. Several others don’t publish a price we could verify.
- Two apps you may still hear about are gone: Microsoft Math Solver (retired July 7, 2025) and Socratic by Google (merged into Google Lens). App Store apps using the “Socratic” name are from other companies.
- Use them after an honest attempt, as a worked example — then do a similar problem with the app closed.
- This is a feature and pricing comparison from official listings, not a hands-on accuracy test.

A homework scanner app lets you point your phone at a problem and get a solution back, usually with the steps. They are hugely popular, they are mostly math-first, and they range from genuinely educational to answer machines. This page lays out who makes each one, what the free tier includes and what the paid tier costs.
How we built this page: app owners, App Store age ratings and listed US subscription prices come from Apple’s official App Store data and the vendors’ own websites, checked October 14, 2026. We did not run our own accuracy test. Where a price or limit couldn’t be confirmed, the table says so rather than guessing.
What a homework scanner app actually does
It reads a photo of the problem, works out what’s being asked, and returns an answer — usually with some or all of the working. Photomath, one of the oldest, launched in 2014 on top of Microblink’s text-recognition technology. Newer apps bolt on AI chat, so you can ask a follow-up question about a step, and some add live human tutors or “expert” answers for a fee.
The useful part is the steps. A student who studies a correct worked example and then does a similar problem alone is using the app much as a good textbook’s solved examples are meant to be used. A student who copies the final line is getting the answer without the learning — and math tests don’t come with a camera.
Homework scanner apps compared: features and prices
Prices are US list prices from official sources on October 14, 2026, and can vary by region or change at any time. “Not verified” means the vendor doesn’t publish the figure where we could read it.
| App | Owner / seller | Subjects | Free tier | Paid tier (US) | Step-by-step | App Store rating |
|---|---|---|---|---|---|---|
| Photomath | Google LLC | Math: elementary to calculus, word problems | Basic, with step-by-step explanations | Plus: $9.99/mo or $69.99/yr | Yes (deeper in Plus) | 4+ |
| Google Lens / Circle to Search | Math, history, chemistry, biology, physics and more | Free | — | Yes for math and physics (Circle to Search) | — | |
| Gauth | GAUTHTECH PTE. LTD. (Singapore) | Math, biology, physics, chemistry, more | Free download | PLUS: $11.99/mo, $31.99/quarter, $99.99/yr | Yes; also AI Live Tutor and 24/7 human experts | 4+ |
| Brainly | Brainly sp. z o.o. | K-12 math, reading, science, others | Free with limits | Brainly Tutor — price not verified | AI answers; live tutors on paid plan | 12+ |
| Mathway | Chegg, Inc. | Basic math to calculus, statistics, algebra, chemistry, physics | Answers and some steps, no sign-up | Subscription for full steps — price not verified | Partial free | 4+ |
| Symbolab | Learneo, Inc. (formerly Course Hero) | Pre-algebra to calculus, trig, physics, statistics | Basic steps | Pro for advanced steps — price not verified | Yes; AI chat | 4+ |
| Chegg Study | Chegg, Inc. | About 80 subjects; textbook solutions, expert Q&A, scanner | Free download | Subscription — price not verified | Yes | 4+ |
| QuestionAI | FlowMind Technology Inc. (website) | Math, biology, history, social science, English, business | Website says features are free | Not listed | Photo “snap & solve” | 4+ (iOS app) |
| NoteGPT | notegpt.io | Summaries, transcription, homework help | Free plan with basic credits | Pro $9.99/mo ($9/mo billed annually) and higher tiers | Not verified | — |
| Answer.AI | ANSWER AI LAB INC | Multi-subject AI tutor | Free download | PRO — price not verified | Yes | 4+ |
For a head-to-head on the three most-searched names, see Gauth vs Brainly vs Photomath. For AI solvers more broadly, see our AI math solvers roundup.
Notes on individual apps
A few details matter more than the feature list.
- Photomath has been owned by Google since the acquisition closed in June 2023. Its site says step-by-step solutions sometimes come with multiple methods, plus “how” and “why” tips.
- Gauth was one of four ByteDance-linked apps pulled in the US on January 18, 2025, under the TikTok law, according to Wikipedia. It was live on the US App Store again when we checked on October 14, 2026. Because of the ownership link, read the in-app data practices before signing up.
- Brainly was founded in Poland in 2009 and added AI in 2023; in 2025 it repositioned itself in the US as an “AI Learning Companion.” In 2020, competition math questions were posted with answers on the platform, which led Brainly to update its honor code. Its paid plan advertises live tutors and a 30-day refund.
- Mathway’s terms page redirects to Chegg’s terms, so Chegg’s rules govern it.
- QuestionAI and NoteGPT have lookalike apps on the App Store from unrelated sellers. Check the seller name before installing.
Discontinued apps and lookalikes
If a guide still recommends these, it’s out of date.
| App | Status | What it means for you |
|---|---|---|
| Microsoft Math Solver | Retired July 7, 2025 (iOS app gone since August 2024) | Remove it from your list |
| Socratic by Google | Discontinued and merged into Google Lens in 2025; socratic.org redirects to Lens | Use Google Lens instead |
| “Socratic” apps on the App Store | Sold by other companies (for example BEFUN AI TECH. PTE. LTD. and Driftwave Labs LLC), not Google | Don’t assume they’re the old Google app |
How to use a scanner app without skipping the learning
The order of operations decides whether an app teaches or replaces. The research on worked examples supports studying a solved problem and then solving a similar one yourself — the routine below follows that pattern. Our math homework help guide explains the evidence.
- Attempt the problem first, on paper, for a few honest minutes. Mark the step where you get stuck.
- Scan it and read only up to your stuck step. Find the move you missed.
- Close the app and finish the problem yourself.
- Do one similar problem with no app at all. If you can’t, go back to the worked example and repeat.
- Check your score honestly. Run a practice set through the test score calculator — if homework scores are high and quiz scores aren’t, the app is doing the work.
Notes for parents: age ratings and settings
An App Store age rating is a content rating, not a minimum age. Most apps here carry 4+, and Brainly 12+, but those ratings describe content, not who may sign up. We tried to read the terms of service for Chegg, Brainly, Gauth, Symbolab and QuestionAI to confirm their minimum ages and could not open them, so we’re not stating an age limit for any of them. The general US rule (COPPA) is that online services collecting personal data from children under 13 need parental consent.
Practical steps that don’t depend on any app’s settings: decide together which app is allowed and for what (checking work, not producing it); ask your child to show you how they got the answer; and watch for the classic gap of perfect homework with slipping test scores. For broader advice by age, see safe AI tools by age. If the issue is cost, our list of free homework help includes live tutors your library may already pay for.
Sources
- Photomath: https://photomath.com/ ; App Store listing: https://apps.apple.com/us/app/photomath/id919087726 ; acquisition history: https://en.wikipedia.org/wiki/Photomath
- Google Lens: https://search.google/ways-to-search/lens/ ; Circle to Search homework help: https://blog.google/products/android/google-ai-android-update-io-2024/
- Gauth App Store listing: https://apps.apple.com/us/app/gauth-ai-study-companion/id1542571008 ; ByteDance apps in the US: https://en.wikipedia.org/wiki/ByteDance
- Brainly App Store listing: https://apps.apple.com/us/app/brainly-your-personal-tutor/id745089947 ; history: https://en.wikipedia.org/wiki/Brainly
- Mathway: https://www.mathway.com/ ; App Store: https://apps.apple.com/us/app/mathway-math-problem-solver/id467329677
- Symbolab: https://www.symbolab.com/ ; ownership: https://en.wikipedia.org/wiki/Symbolab ; App Store: https://apps.apple.com/us/app/symbolab-ai-math-solver-app/id876942533
- Chegg Study App Store listing: https://apps.apple.com/us/app/chegg-study-homework-help/id385758163
- QuestionAI: https://www.questionai.com/ ; App Store: https://apps.apple.com/us/app/question-ai-math-calculator/id6449486871
- NoteGPT pricing: https://notegpt.io/pricing
- Answer.AI App Store listing: https://apps.apple.com/us/app/answer-ai-your-ai-tutor/id6446047896
- Microsoft Math Solver retirement: https://en.wikipedia.org/wiki/Microsoft_Math_Solver
- Socratic by Google: https://en.wikipedia.org/wiki/Socratic_(Google) ; App Store search for lookalikes: https://itunes.apple.com/search?term=socratic+by+google&country=us&entity=software
Prices and listings checked October 14, 2026. Spotted a change? Tell us via the about page.