MathCrunch - Learn math stress free
Mathquizily - Personalized math tests
MathPapa - Solves Algebra problems for you step-by-step
Mathway - Mathway is a freemium math solving app that helps you find the solutions to any math problem you can imagine.
NumWorks - The graphing calculator that makes learning math easier.
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!