KnackCraft builds skill-development software for adults. The first product teaches Chinese and Japanese to people starting from scratch, most of them well past the age at which anyone expects you to take up a new language. The premise is simple: the software handles drilling and memory, and a real teacher handles everything software is bad at. One live group class a week, small enough that everyone speaks. The company is run by one person. If you email support, that is who answers.