Which one do I need?

Tool or System? Tick what's true.

Any one signal on the left decides it — a single hard requirement (client logins, payments, regulated data) sets the shape of the build, no matter how small the rest looks. Nothing to submit; your result updates as you tick.

Signals it's a System

Signals it's a Tool

Your result appears here
Tick the statements above that match your project.

This is a self-guide, not a quote. Projects that sit on the line are exactly what a 30-minute scoping call is for — we'll tell you which side you're on and why.