03Private family tree platform
Lineage
An invite-only family tree that models multi-generation relationships and works out how any two people are related.
- Role
- Solo developer
- Status
- Live in production
- Website
- lineage-family.vercel.app
Stack
- Next.js
- TypeScript
- Tailwind CSS
- PostgreSQL
- Prisma ORM
- Google OAuth
What I built
- 01
Designed a relational PostgreSQL schema modeling multi-generation family relationships (marriages, half-siblings, in-memory members), with logic to auto-link spouses and children and compute the relationship between any two people in the tree.
- 02
Built invite-only access via Google OAuth (no passwords), with per-family data export and a Next.js/TypeScript frontend for navigating the tree.