GPH LandTag
iOS app by Asma Hassannezhad. Navigation · Asma Hassannezhad
- Store rating
- 5 / 5
- Store rating count
- 1
- Download price
- Free to download
- In-app purchases
- Unknown
- Version
- 2.0.2
- Listing last refreshed
- 2026-09-17
View the original store listing
Store description excerpt
GPH LandTag turns a printed sign into a live map of the site it stands on. Point your camera at the square code on any GPH LandTag sign. The site opens instantly — every valve plotted on the map, with the notes the crew left on it and walking directions that take you across the ground to it. WORKS WHERE THERE IS NO SIGNAL Opening a site once needs internet. After that, everything lives on your phone. Read valves, add them, edit notes — out in a field, down a pipeline, anywhere. Your changes upload themselves the moment you come back into coverage. TWO WAYS IN, ONE SIGN Visitor codes open the site read-only. Crew codes let you tag new valves and edit what's there. Scan whichever sign you have — the app remembers both. WALK TO A VALVE Pick a valve and LandTag routes you to it on foot, then hands over to a compass arrow for the last stretch across open ground where no path goes. NO ACCOUNT, NO PASSWORD There is nothing to sign up for. The code on the sign is your way in, and it lives in your phone's secure keychain. Remove a site from the list any time.
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