Photomath

Photomath is a math-solving app that lets you scan any math problem with your phone camera and instantly see the answer plus step-by-step explanations of how to solve it. Point your camera at a printed or handwritten equation and it recognizes the problem, solves it, and — crucially — shows the full working method, not just the final answer. This is why it became one of the most downloaded education apps in the world, with hundreds of millions of downloads.

It covers a wide range: arithmetic, fractions, algebra, quadratic equations, calculus (derivatives and integrals), trigonometry, and word problems, with multiple solving methods shown so you can learn the approach that matches your class. Animated steps and explanations help students actually understand the process rather than just copy an answer.

The free version solves problems and shows basic steps. Photomath Plus (a subscription, roughly $10/month or discounted annually) unlocks detailed "how" and "why" explanations, animated tutorials, and deeper textbook solutions.

Strengths: genuinely magical camera recognition, excellent for checking homework and understanding methods, works offline for basic problems, and covers advanced math. Weaknesses: it can enable copying rather than learning if misused (a concern for teachers), the best explanations require the paid tier, and very messy handwriting or complex proofs can trip it up.

For students stuck on homework, parents helping with math they've forgotten, and anyone wanting to understand how a problem is solved step by step, Photomath is one of the most useful education apps available.