Looks fantastic. What did you use to build this? Any interesting changes/user insights since you posted to HN in July?

I love the low-friction approach to signing up and getting started right away with a cohort. I have a family member battling alcohol addiction, and while I feel the group accountability/support of AA can be helpful, AA often focus too much on the 12-steps with a heavy dose of religion. When my family member entered an in-patient rehab program, one of the "highlights" was the close connections with their intake cohort (phones weren't allowed, so staying connected was up to them - so higher friction to staying in touch for support).

Lockdowns during the pandemic have likely exacerbated conditions that lead to and enable alcohol addiction, with less physical interaction with others to detect warning signs or get access to traditionally "in-person" services.