Shipping 4 apps solo from one Turborepo

Short summary

A solo developer details the Turborepo architecture behind SportsFlow, four apps sharing packages for UI, API, auth, DB, and analytics. Key conventions include Zod-first types, a tRPC procedure ladder that enforces multi-tenant scoping structurally, and billing logic isolated from domain tables. The post is honest about tradeoffs: native lags web, generated auth schemas need guardrails, and tooling multiplies output but not hours.

• •Four apps (web, marketing, docs, native) share packages via Turborepo + pnpm catalog for version lockstep
• •Zod-first types and a tRPC procedure ladder make multi-tenant safety and type propagation structural, not manual
• •Honest tradeoffs: native app lags, generated auth code needs merge guardrails, one person is still one person

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