Math tools help recognize a problem or explain a process. They are useful for learning when the user follows the reasoning and then applies the same method to another example.
Check the recognized expression before reading the solution. Work a related problem independently and compare each step rather than only the final answer.
Photomath helps users explore mathematics through problem recognition and explanations. It is useful for understanding a worked process, with the greatest learning value coming from trying a related problem afterward.
Work through the explanation one step at a time. Close it and solve a similar problem yourself to check whether the method makes sense.
Bring the same example to each tool you compare. Keep the original input and the edits you make to the result, so you can see where each option helps. Check the exported output in the next step of your work, rather than judging only the preview inside the application.
Before choosing a plan, check the product website for current access, usage limits and supported integrations. A useful shortlist matches the task you need to finish and the way you will reuse the result.