Founders and developers who try new things and say what they think. A plain, honest post beats a pitch.
Start the title with “Show HN:” and write like an engineer explaining their work, not like an ad.
Show HN post: Plain text. What it is, why you made it, how it works under the hood, and what feedback you want.
Link your App Store or Google Play page, or a landing page that links to both. In the workspace, Groivo gives Hacker News its own App Store campaign link (ct=) and Google Play referrer, so downloads from it show up in App Store Connect and Play Console.