"Please don't use HN primarily for promotion. It's ok to post your own stuff part of the time, but the primary use of the site should be for curiosity."

https://news.ycombinator.com/showhn.html

"Off topic: blog posts, sign-up pages, newsletters, lists, and other reading material. Those can't be tried out, so can't be Show HNs. Make a regular submission instead."

Basically, if you engage with the HN community and follow guidelines, you are far more likely to get the attention you are seeking.