Boutique software studio

Digital tools for the
physical world.

We build specialized utilities for makers, engineers, and 3D printing professionals.

See our work

Projects

Live on App Store

LayerCost

The most precise 3D printing cost calculator for iOS & macOS. Track filament inventory, monitor live prints, and generate professional PDF quotes.

Learn more
In the lab

Next Project

Something new is being built. Stay tuned.

About

3BT is a small independent studio focused on building precise, opinionated tools for people who work with their hands and machines.