Time- and location-stamped jobsite photos.
OS Field is the mobile application OS Underground subcontractors and their crews use to document work on site. Every photo carries an overlaid timestamp and GPS location, then uploads automatically as the subcontractor’s work record.
Built for the field
A focused, single-purpose tool. No advertising, no cross-app tracking — just a dependable record of the work you do.
Stamped Jobsite Photos
Capture photos that carry an overlaid timestamp and GPS location, baked into the image as a reliable work record.
Accurate Location
Precise GPS is used only while the app is in use to stamp where each photo was taken — never in the background.
Automatic Uploads
Photos and their metadata upload to OS Underground servers and are delivered to your subcontractor organization.
Secure by Design
Enrollment tokens are stored in encrypted device storage and all data is transmitted over encrypted connections.
How it works
Three steps from enrollment to a delivered work record.
Enroll your device
Enter the enrollment token issued by your subcontractor to link your device to their organization.
Capture on the jobsite
Take photos with the camera — each one is automatically stamped with the time and GPS location.
Work record delivered
Photos upload to OS Underground and become part of your subcontractor’s jobsite record.
For OS Underground subcontractors
OS Field is a business-to-business app for authorized field personnel. Access is provided through your subcontractor organization with an enrollment token — it is not a general consumer application. If you work for one of our subcontractors and need access, reach out to your organization or our support team.
Need a hand with OS Field?
Browse answers or email our team — we respond within one business day.