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Screenshot Solver: Solve a Math Problem From a Screenshot

October 6, 2026 · AI Math Tutor Team

A screenshot solver is the fastest route from a math problem on your screen to a worked solution, and on an iPhone it takes three moves once you know them. Take the screenshot, crop it to the one problem, then pick it from your photo library inside the app. Because a screenshot has no glare, no shadow and no camera shake, it is usually the cleanest image you will ever hand a solver.

This guide walks through that route, what the app reads from a screenshot and what it does not, and two worked examples: an equation from a PDF worksheet and a fraction problem from a website.

Key takeaways

A screenshot solver reads the problem from a screenshot the same way it reads a photo, but a screenshot has no glare, shadow or shake, so the read is usually cleaner.
Crop the screenshot to a single problem in the Photos app before you pick it. Given a full page, the app reads only the first complete problem and says so.
In AI Math Tutor an AI vision model reads the screenshot, the same way for everyone, and nothing is solved until you confirm the "Here's what I read" screen.
Compare the read to your screen before you tap "Looks right, solve it". If it is wrong, fix the editable text, recrop, or type the problem.
Whatever the source, follow the steps and substitute the answer back into the original problem.

Why a screenshot is the cleanest image you can give a solver

Every photograph fights the room. Light bounces off the page, your hand casts a shadow, the phone tilts a few degrees, the focus lands on the wrong line. Whatever reads the image has to see through all of that before it can read a single character. Math OCR Explained: How an App Reads a Photo of a Problem covers what goes wrong at that stage.

A screenshot skips the room entirely. The characters are rendered by the device at full sharpness, the background is flat, and nothing is tilted. A PDF worksheet in the Files app, an online homework page, a problem a classmate sent in a message, a slide from class: all of these become a clean image in one press.

Two things still matter. Zoom in first, so the problem fills a good part of the screen and a fraction bar is a clear line rather than a few pixels. And crop afterward, so the image holds one problem and nothing else.

How to solve from a screenshot on iPhone

Open the page and zoom in on the one problem you want, so its symbols are large and the fraction bars and exponents are easy to see with your own eyes.
Take the screenshot. On an iPhone with Face ID, press the side button and the volume up button together. On an iPhone with a Home button, press the side or top button and the Home button together.
Crop it. Tap the thumbnail that appears in the corner and drag the corner handles in until only the one problem remains, then tap Done. If the thumbnail has already gone, open the screenshot in Photos, tap Edit, choose the crop tool, and do the same.
Open AI Math Tutor and pick the cropped screenshot from your photos. The app asks permission before the first problem is sent.
Read the "Here's what I read" screen, which shows the problem as typeset math and as editable text. Fix anything misread, then tap "Looks right, solve it". Nothing is solved until you confirm.
Read the steps, not just the answer, and check the result at the end.

If the app says it could not find readable math on a screenshot and suggests a closer, well lit photo or typing the problem, the usual cause is text that was too small at the moment of capture. Zoom in further and take it again.

What the app reads from a screenshot, and what it does not

Typed equations, fractions with a clear horizontal bar, exponents at a normal size and the sentences of a word problem all read well from a screenshot. So does a printed answer key line you want explained.

What needs a closer look is anything that is not text. A graph's curve, the layout of a geometry diagram, a table of values where the column headings carry the meaning. The vision model describes a labelled diagram in words, but it can miss a relationship between the labels. For those, check the description on the read screen and fix or add anything missed, or type a one-sentence description of the picture along with the question.

A screenshot with several problems on it is the other common failure. The app reads only the first complete one and says so, which may not be the one you wanted. Crop first, every time.

The read is editable text on that screen. If a symbol is wrong, you have three good options: fix it in place and tap "Looks right, solve it", recrop and pick again, or type the problem yourself. Changing a misread 38 back to 3/8 takes a few seconds.

Worked examples

Example 1: solve $5x + 12 = 3x + 20$

The screenshot shows question 4 of a PDF worksheet open in the Files app, zoomed so the question fills the width of the screen and cropped to that single line.

What the app read: $5x + 12 = 3x + 20$

Subtract $3x$ from both sides to collect the $x$ terms on the left. Subtracting the same thing from both sides keeps the equation balanced. $2x + 12 = 20$
Subtract 12 from both sides to leave the $x$ term alone. $2x = 8$
Divide both sides by 2 to get $x$ by itself. $x = 4$

So $x = 4$ . Check it by substituting into both sides of the original: the left side is $5(4) + 12 = 32$ and the right side is $3(4) + 20 = 32$ , so they match.

Example 2: simplify $\frac{5}{6} - \frac{3}{8}$

The screenshot shows a practice page in Safari, zoomed in until each fraction bar was a clear separate line, cropped to the single expression with the surrounding text left out.

What the app read: $\frac{5}{6} - \frac{3}{8}$

Find a common denominator. The least common multiple of 6 and 8 is 24, so rewrite both fractions over 24.
Multiply the top and bottom of each fraction by the number that turns its denominator into 24. $\frac{5}{6} = \frac{20}{24}, \quad \frac{3}{8} = \frac{9}{24}$
Subtract the numerators now that the denominators match. $\frac{20}{24} - \frac{9}{24} = \frac{11}{24}$
Check whether the result simplifies. 11 is prime and does not divide 24, so the fraction is already in lowest terms.

So $\frac{5}{6} - \frac{3}{8} = \frac{11}{24}$ . Check it in decimals: $\frac{5}{6}$ is about $0.833$ , $\frac{3}{8}$ is $0.375$ , and $0.833 - 0.375 = 0.458$ , which matches $\frac{11}{24} \approx 0.458$ .

Common mistakes

Picking a full-page screenshot without cropping, so the app reads only the first of six problems.
Taking the screenshot at a small zoom, which turns a fraction bar into a few pixels and an exponent into a dot.
Photographing the screen with the camera instead of taking a screenshot, which adds glare and a moire pattern to a perfectly good image.
Skipping the read screen and getting the steps for a problem that is not the one on your screen.
Stopping at the answer without following the steps, which is where the method you will need on a test actually lives.

The same route works for a screenshot of a receipt or a column of figures, covered in Scan Calculator: Point the Camera and Get Arithmetic Right, and the habits carry straight over to paper, covered in Handwritten Equation Solver: How to Scan Your Own Writing. The full picture of how a photo becomes a worked solution is in App That Scans Homework: How Photo Math Solvers Work.

Next time a problem is sitting on your screen, screenshot it, crop it to the one line, and read every step in AI Math Tutor.

AI Math Tutor is a study aid, not a substitute for a teacher, and it can make mistakes: check every step, not just the answer.

Questions

How do I solve a math problem from a screenshot on iPhone?

Zoom in on the problem, take the screenshot, crop it to that one problem in the Photos app, then open AI Math Tutor and pick the screenshot from your photos. The app shows what it read on the Here's what I read screen, and solves it once you tap Looks right, solve it.

Is a screenshot better than a photo of the screen?

Almost always. A screenshot has no glare, no shadow, no tilt and no camera shake, and the text on it is rendered crisply. A photo of a screen adds reflections and a moire pattern that make every character harder to read.

Does the screenshot solver work for free?

The free version of AI Math Tutor includes a limited number of solves each day, and screenshots go through the same route as photos: an AI vision model reads the image, you confirm the read, and the problem is solved with steps. AI Math Pro adds unlimited solves and practice sets, and a deeper reasoning model for solving.

What if the read does not match what was on my screen?

The read is editable text on the Here's what I read screen, so fix the wrong symbol there and then tap Looks right, solve it. Recropping the screenshot more tightly or typing the problem instead also work, and nothing is solved until you confirm.