Mathway - Mathway is a freemium math solving app that helps you find the solutions to any math problem you can imagine.
Delta: Math helper - With Delta: Math helper, quickly solve any math problem with an algorithm. Save time checking your homework or studying for a test, it’s free!
Math.com - Math.
Mathquizily - Personalized math tests
Photomath - Photomath is a mobile app that will give you the ability to test your equations through a simple calculator interface that will fully explain the solution in a step-by-step fashion. Read more about Photomath.
MyScript Calculator - Perform mathematical operations naturally using your handwriting.