If you're looking for something besides AI Math Solver, Photomath is a good alternative. The app uses a math camera interface to step-by-step solutions to problems in a variety of subjects from elementary to college level. It's got features like instant answers, multiple solution methods and customizable visualization, so it's good for students and teachers.
Another good option is Wolfram|Alpha, a computational knowledge engine that offers step-by-step solutions to a variety of subjects, including math. It's got higher-level features like function plotting and differential equation solving, and is good for people who want more-advanced explanations and who need to tap into expert knowledge.
If you're looking for a more general-purpose homework help tool, UpStudy is worth a look. It covers several subjects including math, chemistry, physics and biology, and offers 24/7 access to live tutors. It can handle word problems and offers step-by-step solutions, so it's good for students of all ages.