SplitIt

React + TypeScript frontend, Node.js + Express + TypeScript backend, Prisma, Supabase PostgreSQL.

1. Install

npm install

2. Create Supabase database

Create a Supabase project, open Connect, and copy the Supavisor Session Pooler connection string on port 5432.

Use it in:

apps/api/.env

Example:

DATABASE_URL="postgresql://postgres.PROJECT_REF:YOUR_PASSWORD@aws-0-REGION.pooler.supabase.com:5432/postgres?sslmode=require"
PORT=4000
WEB_ORIGIN="http://localhost:5173"

For serverless deployment, use transaction pooler port 6543 and add ?pgbouncer=true.

3. Frontend env

cp apps/web/.env.example apps/web/.env

4. Prisma

cp apps/api/.env.example apps/api/.env
npm run db:generate
npm run db:migrate

5. Run

npm run dev

Frontend: http://localhost:5173
Backend: http://localhost:4000

Features

• Create public group
• Public link sharing
• Add/edit/delete people
• Add/edit/delete payments
• Auto-calculate who pays whom
• Full change history
• Mobile-first green money-style UI