Get a famous hunter — It's easy to say "meh, I'll just hunt myself or ask one of my friends" but PLEASE DON'T! You'll gain huge impact from big-name hunters. Most of them have thousands of followers, and they will all get notified once you launch. It's better for your brand, too :-) These hunters are mostly very nice and cooperative when you just ask them to hunt you. Here's a list of the top hunters you can... Source: about 2 years ago

I also found https://upvote-bell.com/. But both still lacks the overall result driven analytics. https://productwars.phantombuster.com/ focusses on today's launch. - Source: Hacker News / about 3 years ago

Have you seen wip.chat... I'm not really suggesting it (since they charge you money) but same idea of posting goal points/checkboxes. Source: about 1 year ago

Another concept that's interesting/maybe motivating is wip.chat though I don't suggest it (not free). But it's neat (public todo's). Source: almost 2 years ago