Calterra
Made in Arizona

Survey it. Model it. Grade it. Without the five-figure quote.

Calterra builds iPhone and iPad apps for the dirt world — collect points, stake out designs, build surfaces, and see grade from the cab, with the RTK receivers you already own. Built by an Arizona excavation family that got tired of what this technology costs.

Get updates on the beta
The product family

One skeleton, three tools

Three apps, one system. Colors straight off the jobsite: pink survey paint, white proposed-excavation marks, and the amber beacon on the cab.

Survey markings · pink

Calterra Survey

Daily field work without the subscription treadmill.

  • Fast point collection and stakeout with big, glove-friendly readouts
  • DXF linework and LandXML surfaces straight from your engineer
  • Streams standard NMEA — starting with Emlid Reach RS3/RS4
In development · field-tested on real Arizona jobs
Proposed excavation · white

Calterra Model

Civil 3D's job, without Civil 3D.

  • Build surfaces, linework, and points on your phone or iPad
  • Design a pad or a swale at the tailgate, not back at the office
  • Feeds Survey and Grade directly — one file chain, no exports
Planned
Machine beacon · amber

Calterra Grade

In-cab indicate, priced like software — not like a second machine.

  • See cut/fill against the design surface from the seat
  • Your iPad + affordable RTK and motion sensors — no dealer install
  • Guidance, not autopilot: the operator stays in control, always
In design · public pricing when it ships
About

Built in the seat, not the boardroom

Calterra Systems is an independent Arizona software company, founded and run by a family that runs excavators and fine-grades pads for a living.

The tools we use every day taught us two things: precision GNSS has gotten cheap, and the software that puts it to work hasn't. 3D grade control still runs $25,000 to $100,000 installed. Calterra exists to close that gap for the small contractor — the owner-operator with two machines, not the fleet with a technology department.

We build native apps for iPhone, iPad, and Mac, engineered for jobsite reality: sun glare, gloves, spotty coverage, and operators who need an answer in one glance.

Every feature gets proven on real dirt before it ships. If it doesn't survive a summer in Arizona, it doesn't go in the app.

Contact

Talk to us

Want in on the beta, have a workflow we should support, or just want to talk dirt and GPS?

Calterra Systems LLC
Arizona, USA
support@calterrasystems.com