Sorry, but while the product may or may not be good, every sentence that I read from you sounds like OMG HYPE.

"The ultimate goal would be to be perfectly guided to mastery"...? Yeah, and the ultimate goal of every NLP startup is to have 100% natural language understanding by the machine... but that doesn't mean that any of them can promise that in the foreseeable future, or that I won't laugh at them if they do.

"I would encourage you to learn a subject towards 100% and you'll see exactly what we mean."

That... is already what I do with Anki, or at least as reasonably close to 100% as possible under reasonable time constraints. It's patronising of you to assume that I don't, or to claim that your product is the only way to reach that.

Good luck with your startup.