Kind of a random question: why wait so long to do your launch HN? It looks like you've had a working product for quite a while now.

When I see a launch HN from over a YC batch over a year ago I assume there was a pivot or they had trouble getting traction. Doesn't seem like that happened in your cases and it might not happen in most cases, which is why I'm asking.

Either way, looks like an awesome product. I sent it over to the Data Science team at my company and they were pretty impressed.