NGS Benchmark Hunter
Navigation
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
NGS Benchmark Hunter puts hundreds of thousands of National Geodetic Survey markers on a map so you can find them in the real world. Benchmarks are brass or aluminum disks set into rock, concrete, and structures across the United States. Placed by the National Geodetic Survey, they serve as precise reference points for surveying and mapping — and they're everywhere, hiding in plain sight.
FEATURES
• Browse nearby benchmarks on an interactive map
• Color-coded markers show difficulty: green (easy), orange (moderate), red (hard)
• View official NGS datasheets, recovery notes, and history for each marker
• Log your finds with notes and photos
• Search any location to explore benchmarks nationwide
• Toggle satellite view to help locate markers in the field
Whether you're a surveyor, geocacher, hiker, or just curious, benchmark hunting is a rewarding way to explore the outdoors and discover a hidden piece of America's nfrastructure.
Ratings & Reviews
- Added camera capture to Log Find screen
- Include Not Found benchmarks option on map
- Not Found benchmarks shown in gray
The developer, Vincent Star, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Vincent Star
- Size
- 2.6 MB
- Category
- Navigation
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Vincent Star