I love this! I'm reading through the criticism in the comments and I can't help but imagine all of the articles out there complaining about how the interview process is broken - sure enough even one tool that is slightly different than the standard interview process and what do people do? complain about its short comings.
Keep it up and iterate! This is a good direction, and it certainly is going to be useful for some teams :)
the problem with the interview process is that it is unfair, not properly capturing the actual qualifications and testing the wrong stuff. the complaints here are that this tool does not properly capture the actual qualifications either, and therefore it suffers from the same problem, just in a different way. it may work for a few people, just like the interview process works for a few people, and it may work for a few use cases (like finding a FOSS developer) but it doesn't provide a solution for the interview problem itself.