I'm working on an early-stage wellness app for people managing autoimmune conditions.

We've recently launched, and I'm trying to focus less on downloads and more on whether people are actually finding enough value to keep using the app.

Unlike a traditional B2B SaaS, this is something people would use to track information about their personal health and daily experiences.

We're working with a limited marketing budget, so I'm especially interested in organic growth and learning directly from users.

For anyone who's launched a niche B2C subscription product, what metrics did you pay the most attention to early on?

And what helped you figure out whether you had a product people genuinely wanted to keep using?