Statwing aims to offer 1-click data analysis: You upload some data and then select different variables to be analyzed for frequencies, visualizations, correlations and such.
Naturally, you need to be careful about letting a cloud service auto-analyze your data. However, Statwing does explain in an advanced tab how it comes to conslusions like statistical significance and effect size.
It offers a free account that lets you upload up to 1MB of data that's stored for 24 hours. (If you want more storage and to have your data remain on the site, plans start at $25/month.)
Get it: https://www.statwing.com