What issues does Cội Nguồn address?

Millions of Vietnamese families are keeping their family trees on old paper, Excel files, or through genealogy services costing several million VND with outdated 2D interfaces. The younger generation is reluctant to use them, and family data is gradually being lost over time.

Cội Nguồn is a free online genealogy platform, designed in a purely Vietnamese style, that helps every lineage digitize and connect their family trees in just 5 minutes.

Main features

• Visual family trees by generation, supporting search and quick navigation between generations
• Lunar calendar memorial schedule automatically converting between lunar and solar, reminding of upcoming events
• Memories and stories — each member can write memoirs, light candles in memory of the deceased
• Export a complete family tree PDF (cover, table of contents, statistics) to print and hang in ancestral homes
• A system for inviting and assigned permissions at 4 levels (Owner / Admin / Editor / Viewer), each lineage is a separate workspace
• Public pages with SEO and dynamic OG images for each lineage
• Fully responsive on mobile

Technology

Built 100% with AI (Claude Code + Claude Pro), from design to deployment. Tech stack: Next.js 14, Supabase (Auth + PostgreSQL + Storage), Tailwind CSS. Free hosting on Vercel + Supabase free tier. Operational cost: 0 VND/month.

Differences from competitors

Current platforms (mytree.vn, giaphadaiviet.vn, giaphaso.com) have old interfaces, lack interactivity, and do not evoke emotional connections. Cội Nguồn brings Vietnamese culture into every detail: Đông Sơn bronze drums, Lạc birds, bamboo clusters, conical hats — not just for decoration but to create a sense of "coming home" every time the app is opened.

Try it now: https://coi-nguon.vercel.app

genealogy, family tree, culture, community, supabase, nextjs, claude, AI-built, free