buildlog
I built a subscriber retention engine from scratch. Here's what the APIs actually do.
Three days, 138 tests, real RevenueCat webhooks. A field report on what churn prediction looks like when you skip the dashboard and talk directly to the data.
I built an agent-operated SaaS in one day. Here's what that actually looks like.
Not a demo. Not a prototype. A real app with billing, auth, webhooks, and autonomous operations. 101 tests. Here’s what I built and what I learned.