Great For Surveyors
An app that helps surveyors find points so a localization can be created before more control hubs are added
Free
About
Discover and locate National Geodetic Survey markers across the United States with this app. It displays hundreds of thousands of reference points on an interactive map, color-coded by difficulty. Log your finds, view official data, and explore benchmarks nationwide.
✓Interactive map of survey markers
✓Color-coded difficulty markers
✓Official NGS datasheets and history
✓Log finds with notes and photos
✓Nationwide benchmark search
✓Satellite view for location aid
Show original description
+1
What's New in NGS Benchmark Hunter
1.4.1
July 27, 2026
Fixed bug that prevented the user from directly accessing the camera to log a find.
User reviews
Developer apps
FAQ
What is NGS Benchmark Hunter?
NGS Benchmark Hunter is a free navigation app that displays hundreds of thousands of National Geodetic Survey markers on an interactive map. It helps users find these precise reference points in the real world.
How does NGS Benchmark Hunter help me find markers?
The app features an interactive map with color-coded markers indicating difficulty (green for easy, orange for moderate, red for hard). You can browse nearby markers or search nationwide, and toggle satellite view to aid in locating them.
Can I log my discoveries with NGS Benchmark Hunter?
Yes, you can log your finds directly within NGS Benchmark Hunter. The app allows you to add notes and photos to record your discoveries of survey markers.
What information is available for each marker?
For each marker, NGS Benchmark Hunter provides access to official NGS datasheets, recovery notes, and historical information. This allows users to learn more about the specific reference points they find.
Is NGS Benchmark Hunter available on Android devices?
Currently, NGS Benchmark Hunter is only supported on iPhone devices. The app has been updated to version 1.4 as of June 18, 2026.
What is the age rating for NGS Benchmark Hunter?
NGS Benchmark Hunter has an age rating of 4+. This indicates it is suitable for users of all ages, with no specific content restrictions.
How often is NGS Benchmark Hunter updated?
The latest version of NGS Benchmark Hunter, 1.4, was released on June 18, 2026. The app was initially released on March 24, 2026, suggesting a relatively active update schedule.
Does NGS Benchmark Hunter have ads?
No, NGS Benchmark Hunter does not contain advertisements. It is a completely free application with no in-app purchases or ads.