Documentation

Everything you need to know about using FirstUsers.

Getting Started

Create your account

Sign up with your email using our magic link — no password required.

Submit your idea

Write one paragraph describing what you want to build and who it helps.

Get your report

In under 2 minutes, receive a full validation report with 18 scored signals.

Understanding Your Report

Demand Score

Measures how strongly simulated personas respond to your idea. Higher is better.

Persona Simulation

2,000+ diverse early-user personas each react independently to your concept.

Verdict

Build, Pivot, or Kill — a clear recommendation backed by data, not opinion.

Data & Privacy

Idea privacy

Your ideas are never shared, sold, or used for model training.

Data deletion

Request full deletion of your data at any time by emailing support.

Security

All data is encrypted in transit and at rest using industry-standard protocols.