When comparing PhotoMath vs Wolfram Alpha, the Slant community recommends Wolfram Alpha for most people. In the question“What are the best Android apps for math problem solving?” Wolfram Alpha is ranked 1st while PhotoMath is ranked 4th. The most important reason people chose Wolfram Alpha is:
You can use WolframAlpha to get find out what are things like sinusoids, tangram or Riemann Hypothesis.
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Pros
Pro Problems can be captured using the camera
You can photograph a math problem and the app will recognize and solve it for you.
Pro Provides step-by-step solutions for free
Unlike with other apps, step-by-step solutions to problems is not a paid feature.
Pro Explains unknown terms, definitions and problems
You can use WolframAlpha to get find out what are things like sinusoids, tangram or Riemann Hypothesis.
Cons
Con Has focusing issues
Multiple people have reported the app as having difficulty focusing correctly. As a result, the app can read the problems wrong by not catching certain characters or misinterpreting them and thus solving the problems incorrectly.
Con Can't capture using a camera
Math problem solving apps commonly come with the ability to take a photo of the problem using the device's built-in camera. WolframAlpha lacks that ability.