Mathway - Math Problem Solver is like 10 scientific calculators rolled into one iPad app. With a paid subscription, you can see the work that goes into its solutions, but the free version is fine ...

Mathway teaches students with an easy-to-use solver that can be accessed through optical character recognition and offers step‑by‑step instruction to teach both simple and complex mathematics.

You simply enter the problem using the scientific calculator, or speak the mathematical problem into the smartphone and Mathway will display the answer.

Chegg, a leading direct-to-student learning platform, has acquired Mathway, a popular math problem-solving application. Chegg paid $100 million for the app, with additional payments of up to $15 ...