We have covered plenty of calculators and solvers for iPhone in the past few years. They enable you to get answers to your questions fast. PhotoMath is a pretty cool calculator that relies on your smartphone camera to capture problems and solve them for you. Just point your camera towards mathematical expressions, and the app will show you the results. It not only gets you out of trouble but also teaches you how to solve problems.
When you press the steps button, you will get step-by-step solutions. The app currently supports fractions, decimal numbers, linear equations, and various other functions. While the app does not support handwritten text, it does show promise. You can try the app for free at this time.