You are stuck on problem 14, it is 10 pm, and the textbook has no worked example. Pointing a math camera at the page and getting a full solution a few seconds later feels like cheating. It does not have to be, if you pick a tool that shows its work.
This guide compares the main apps that let you take a picture of a math problem and get an answer. We look at what each one does well, where it falls short, and how to take photos that the app can actually read.
How a math camera app actually works
Behind the scenes, three things happen. First, the app detects text and symbols in your photo with optical character recognition. Second, an AI model works out what the problem is asking. Third, the result is formatted into steps you can read.
The weak link is almost always the first stage. If the app misreads a minus sign or a fraction bar, everything after that is confidently wrong. That is why photo quality matters more than most people expect.
A camera solver is also only half of the story. The scan gives you an answer. Learning happens when you can ask why a step works, and that depends on what the app offers after the photo.
The best apps to solve math problems with a camera
Ratings below come from our competitor data and are shown as they were recorded. They tell you how popular a tool is, not how well it teaches.
Acuity
We built Acuity because we wanted a scan tool that did not stop at the answer. You can scan with the camera, import a photo, import a PDF or type the exercise. You get a structured, step-by-step solution in about 12 seconds on average, and you can open Mathilda, the built-in AI chat, to ask about any line you did not follow.
It also covers more than math, and it turns your material into study sheets and quizzes. The limits are real: it needs an internet connection to solve, it is iPhone only, and PDF imports ignore diagrams, so send a photo when the figure matters.
Photomath
Photomath has an average rating of 4.8 across 733,174 ratings and is owned by Google. It is math only, which is both its strength and its ceiling. There are no study sheets or quizzes. If you only ever need math, it is a solid pick, and we compare the two in detail in Acuity vs Photomath.
Gauth
Gauth is the largest competitor by volume, with a 4.8 average over 1,402,901 ratings. It is a broad AI study companion with strong math and science scanning, plus AI chat and multi-subject support.
Answer.AI and Question.AI
Answer.AI (4.7 over 166,335 ratings) combines scanning with an AI tutor chat. Question.AI (4.7 over 156,366 ratings) scans and solves across all subjects. Both overlap directly with Acuity on solving, and neither generates study sheets.
Symbolab
Symbolab (4.6 over 26,011 ratings) is a specialized math solver with step-by-step explanations, strong on algebra and calculus. It has no AI chat and no study sheets. For a deeper look at this kind of tool, read our best math equation solver comparison.
Math camera apps compared side by side
| Feature | Acuity | Photomath | Gauth | Answer.AI | Question.AI | Symbolab |
|---|---|---|---|---|---|---|
| Camera scanning | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| Step-by-step solutions | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| AI chat for follow-up | ✅ | ❌ | ✅ | ✅ | ❌ | ❌ |
| Subjects beyond math | ✅ | ➖ Math only | ✅ | ✅ | ✅ | ➖ Math only |
| Study sheets | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ |
| Quiz generation | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ |
Some cells reflect what our data records as an overlap or a missing feature, so check each app's current version before you commit.
How to take a photo that a math camera can read
Honestly, this is where most failed scans come from. A few habits fix the majority of problems:
- Shoot in daylight or under a lamp, and keep your own shadow off the page.
- Hold the phone parallel to the paper. Angled shots bend fraction bars and exponents.
- Frame one problem at a time. Crop out the neighbours, because a stray "b)" from the next question confuses the solver.
- Choose the right subject before sending, since the subject shapes the quality of the solution.
- If handwriting is messy, type the problem in manually. It takes ten seconds and avoids a wrong reading.
If the app finds nothing at all, the issue is often local text detection rather than the AI itself. A cleaner retake usually solves it.
Use the solution to learn, not just to copy
A solved problem you did not understand is worth nothing on exam day. Teachers do not hand out a camera in the exam hall.
Try this routine instead. Attempt the problem on paper first for five minutes. Then scan it and compare your steps with the solution, line by line. When your work diverges, stop at that exact step and ask why. Finally, redo the problem from a blank page without looking.
Acuity has a training mode that generates a similar exercise from the one you just solved, which is useful for this last step. And no tool is perfect, so if an answer looks off, compare it with your course method and ask the chat to recheck it.
What a math camera handles well, and what it does not
Printed textbook problems are the easy case. Clean fonts, clear spacing and standard notation give the text detection very little room to fail. Linear equations, quadratics, fractions, systems and basic derivatives usually come back correct on the first try.
Handwriting is harder. Cramped digits, a 1 that looks like a 7 or an exponent drifting off the baseline can change the whole problem. Word problems add another layer, because the app has to read the sentence and then decide which numbers matter.
Where you should double-check
- Long multi-part exercises, where an early misreading carries through every later line.
- Problems with diagrams, graphs or geometry figures, which a plain text scan may ignore.
- Proof-style questions, where the format of your answer matters as much as the result.
- Anything that must follow a specific method from your class.
Surprisingly, the fix is rarely a better app. It is a better habit: read the first line of the solution and confirm the app understood the problem you meant before you read anything else.
Picking by situation
A quick check at the kitchen table needs speed. Exam revision needs explanations and follow-up questions. A long semester needs something that keeps your solved problems organized, so you can come back to them later. Ask yourself which of those three you are in, then choose the tool that matches, rather than the one with the most downloads.
Free limits and what you give up
Most math camera tools are free for a few solves and then ask for a subscription. In Acuity, the free plan allows up to 12 exercises per day, 10 Mathilda messages per day and a maximum of 6 revision sheets. These limits are indicative and may change. Premium unlocks unlimited exercises and messages.
The tradeoff with any scanner is dependence. If you scan every problem without trying first, you get faster homework and weaker grades. Use the free tier on the problems that truly block you.
Which math camera should you pick
If you only need math and want a familiar name, Photomath and Symbolab are reasonable choices. If you want the biggest user base, Gauth is hard to ignore. If you want to scan a problem, ask follow-up questions and then turn the topic into a study sheet and a quiz, that is the job we designed Acuity for.
Whatever you choose, treat the photo as the start of the work, not the end. Take a sharp picture, read the steps, and test yourself afterwards. If you have an iPhone, you can try Acuity for free on the App Store, and our math solver scanner guide goes deeper on homework workflows.