The best alternatives to Mathkeys by Parsegon are Mathew, NUM, and Mr Math. If these 3 options don't work for you, we've listed a few more alternatives below.
Mathew allows you to scan printed or handwritten math problem for instant step-by-step instructions. It's like having your own personal teacher by your side whenever you are trying to learn! Giving you just what you need to get unstuck and make learning fun.