I don't think it's for people who need SPSS. Statwing is great for much simpler use cases. When you need statistical heavy lifting, go to SPSS or R or something

I don't think it's for people who need SPSS. Statwing is great for much simpler use cases. When you need statistical heavy lifting, go to SPSS or R or something else that can do all that, but if you're not a statistician / data person and have simpler needs, things like Statwing (and, presumably, Wolfram Alpha Pro) can do a decent job.