You should try http://www.ersatzlabs.com -- sign up for the app at http://api.ersatzlabs.com invite code "ersatzbeta"

It's still in beta, but it's a lot more full featured than it was a few months ago. We're trying to make deep learning easy and we provide a variety of neural network algorithms backed by GPUs. Documentation still sucks... I'm co-founder.

It's a tricky balance w/ all of our products right now (BigML, Ersatz, prediction.io, datasight.io, wise.io, more) -- how to strike the right balance between appealing to Excel power users versus people who are very comfortable in matlab or python but still don't want to build their own if there's a significantly easier option.