I'm not entirely sure how this works as an alternative to Wolfram Alpha. Much of the value I see in Wolfram Alpha comes from it's highly curated data set and ability to parse natural language into a useful mathematical representation. It brings curated constants and mathematical equations, graphs, and simulations to the general public. On the other hand, this really seems like the SymPy interpreter in a browser.

I think this would do much better without the comparison to Wolfram Alpha.