KATNA: Metal detector and maps

A unique app for metal detecting enthusiasts and outdoor lovers. Old maps, LIDAR and historic military surveys on your phone. Plus a GPS finds catalog, AR navigation and field tools. KATNA is the complete kit for everyone who takes detecting seriously.

HISTORIC MAPS:
* 1st Military Survey (1763–1787)
* 2nd Military Survey (1836–1852)
* 3rd Military Survey (1876–1878)
* Müller's Map of Bohemia (1720) and Moravia (1716)
* LIDAR map of the Czech Republic – reveal lost paths, ramparts and hidden structures in the terrain
* High-quality satellite imagery
* Topographic hiking maps

GPS FINDS CATALOG:
* Finds diary – photos, coordinates, notes, tags and folders
* Heat map of locations – see where you found the most
* AR navigation – augmented reality guides you back to the exact find spot
* Print find record cards for archaeologists and museums
* Data export and automatic backup to your Google Drive

FIELD TOOLS:
* Pedometer with minimal battery impact
* Compass for orientation
* Magnifier – examine coins and small finds, freeze frame, filters
* Weather – hourly outlook and 4-day forecast for planning your trips

WHY KATNA:
✓ Created by an active detectorist, field-tested
✓ NO SUBSCRIPTION – one-time purchase for full access
✓ Backed by the detecting community

Works with any metal detector brand – whether you use Minelab, Garrett, XP Deus or Nokta, this app is made for you. No pairing, no Bluetooth.