How would you find your first real users for a health-adjacent tracking app?

Hi everyone, I’m the maker of FaceLogs, a free photo log for tracking skincare progress. Daily photos line up with your last one, a lighting check keeps them comparable, and a timeline shows when you started each product. Photos stay in your browser, with no accounts or uploads. It’s an early prototype and a tracking tool only, not medical advice.

Try it: https://facelogs.netlify.app

I’m stuck on one thing: distribution. Many health and skincare communities don’t allow app links, and a lot of existing apps in this space look similar. A few questions for people who’ve been through this:

1. Where did you find your first 50 real users, as opposed to other makers?

2. How did you earn trust for an app that asks for personal photos?

3. If you were me, would you aim at a niche first (like people on prescription treatments) or stay broad?

Happy to give feedback on your projects in return.