I built a real-time retainer tracker using React and Node.js

Hi everyone.

I recently built a tool called Retain to solve a specific problem: efficiently tracking freelance hours without spreadsheets or constant email updates.

The Concept Retain is a client portal that keeps budget tracking transparent. The goal was to remove friction for both the developer and the client.

Key Features

• Real-Time Sync: Utilizing Socket.io, budget bars update instantly on the client’s screen whenever hours are logged on the admin side.
• Magic Links: Clients receive a secure, cryptographic link to view their dashboard. No account creation or login is required.
• Tech Stack: React, Node.js, Express, Prisma, and PostgreSQL.

How it works

1. I set a total budget (e.g., 20 hours).
2. I log time as I work.
3. The client checks their permanent link to see exactly how much time remains.

I am currently refining the architecture and would appreciate any feedback on the concept or the stack.

link:https://retain-frontend-gamma.vercel.app

Thanks for reading.