The field calculator for every trade

GearTech OS

Now on the App Store

100+ purpose-built tools for pipefitters, welders, electricians, framers and more — each with a diagram and the formula behind it. Fully bilingual. Works offline. Free.

Download on theApp Store
iPhone · iOS 16+ · English & Español
GearTech OS menu GearTech OS calculator GearTech OS AI assistant
Built for: Pipefitting · Welding · Electrical · Framing · Concrete · HVAC · Plumbing · Machining · Solar · Sheet metal · Automotive
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100+ field tools

Offsets, fittings, cut lists, voltage drop, rafters, duct, RPM and more — one keypad per trade.

AI assistant + voice

Type or dictate a trade question and it routes you to the right tool and answers.

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Diagram & formula

Every result shows the diagram and the math behind it, so you can check it in the field.

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Bilingual & offline

English or Spanish, one tap. No signal on the jobsite? It still works.

COMING SOON

The GearTech OS handheld

A dedicated field calculator you can run with gloves on — color display, tactile keys, feet-inch-fraction input, fully offline. Currently in development.

DISPLAY3.2" color TFT
KEYS35 tactile keys
INPUTFt-In-Fraction
OFFLINE100% field-ready

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“We build refineries, hospitals and skyscrapers with our hands. Our tools should be built with the same dedication.”

Founder — Per Diem Syndicate · Pipefitter / Welder

Get GearTech OS free

The whole toolkit, in your pocket, built to work offline on the jobsite.

Download on theApp Store