[tikkun]

What's your financial standing? Are you doing this for fun and you already have enough assets to live on, or does this need to work financially?

If it needs to work, I think pausing development and focusing only on marketing, as you say, seems like a good path. And I'd try and do "high fidelity" marketing rather than low fidelity - e.g. approach people in person at the cafe at a gym or after their workout, rather than sending ads or emails into the void where you don't know what lands.

I'll note that it's kind of wild to have invested $1mm without a seemingly clear plan for distribution, but, it seems that you're taking steps to address that now at least.

[ptwobrussell]

Financially, I don't need the app to produce income to keep my life on track...but the opportunity cost of continuing to sink so much time + life force into it is substantial (even in comparison to sunk costs), and that's one of the factors I'm increasingly thinking about.

I really like the idea of doubling down on getting high-quality interactive 1:1 feedback like you suggested, and that is something I can easily do on a daily basis to build more signal about how to dial in PMF in an intentional way.

I heard a quote once (Justin Kan, I think) that went something like this: first time founders focus on product; second time founders focus on distribution.

I might just be the extreme version of that quote ;)