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.