Documentation

How to use OpenSurvey3D

Step-by-step guides for the field app, from your first point to a finished deliverable. 56 guides and counting.

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1 What OpenSurvey3D does A free survey and GIS field app for iPhone and iPad. It works with the phone's own GPS and reaches centimetre accuracy with an RTK receiver.2 Install and permissions Install OpenSurvey3D from the App Store, and what each permission prompt is for.3 A tour of the app The five tabs, the project strip, the accuracy pill and the Survey map controls. Learn where everything lives.4 Your first survey Create a project, pick what you're collecting, capture a point and see it on the map. About five minutes, using only the phone.

All guides

Getting started

What the app does, what it needs, and a tour of the screen.

Projects

Create a project for each job, switch between them, and look inside any project without making it the active one.

Collecting

Pick what you're collecting, then record points, lines and areas by occupying them, walking them, placing them by hand or on a timer.

Positioning and GNSS

Read the accuracy pill, connect a Bluetooth or Wi-Fi receiver, get RTK corrections, set antenna height and keep the raw record.

Coordinates and datums

Choose a state plane or UTM zone, state your vertical datum, fit a site localization and pick the units the app shows.

Field tools

Stake out and navigate to points, check into known control, run COGO, compare against design surfaces and manage feature codes.

Maps and 3D site model

The Survey map, offline map areas, the 3D terrain model, measuring, profiles and terrain export.

3D capture

Photos, videos, LiDAR point clouds and photogrammetry models, attached to your surveyed assets and placed on the ground.

AR

See your assets and 3D scans through the camera, where they are on site.

Import and export

Bring design points, routes and surfaces into a project, and get your survey out in the formats CAD, survey and GIS software read.

Settings

Every row of the Settings tab, what it changes and where to learn more.

Help

Report a problem, fix common issues, see what the app doesn't do yet, and learn what data stays on your phone.