How often GPS records a point (Low=30s, Med=10s, High=5s, Highest=2.5s)
OFFLINE MAPS (.PMTILES)
Save Current View Offline
Download tiles for the visible map area at all zoom levels you select, packed into a real .pmtiles file on your device. Works fully offline forever — no cache, no eviction.
Min zoom0
Max zoom14
Tap the slider to estimate tiles & size.
Offline 3D Terrain
Saves Mapterhorn DEM tiles (z0–10) for this view so 3D mode works without internet.
Import .pmtiles File
Already have an archive (Protomaps, OpenFreeMap, BBBike, tippecanoe output)? Load it directly.
ONLINE TILE CACHE (FALLBACK)
Auto-Cache
Tiles you view while online are cached opportunistically. For reliable offline use, prefer importing a .pmtiles archive above.
Active
Download Current Layer
Pre-cache the current base map at all zoom levels for this viewport.
Download ALL Layers
Pre-cache every base map + overlay for this viewport. Switch between any layer offline.
Cached Tile Storage
Tap Refresh to calculate
Clear Tile Cache
Frees storage — your map objects are not affected
DATA
Export GeoJSON
CalTopo-compatible (simplestyle: stroke / fill / marker-symbol)
Export GPX
GPX 1.1 with gpx_style colors — works with Gaia, Garmin, CalTopo
Import File
Load GeoJSON, GPX or KML
Clear All Map Data
Removes all saved objects, folders, and settings
ABOUT
Version
0.2.4 (Build 26)
Gear / Pack List
0 items0 oz (0 lb)
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Team Members
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Team Sync
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Who are you?
How do you want to connect?
Nearby Devices
Tap Scan to find nearby devices…
Transport
——————
⚠ GPS unavailable — your location won't appear on teammates' maps.
Enable location services and grant permission to share your position.
Connected Peers
Waiting for peers to join…
Add a Device
Paste a hex address from another ZYRN TOPO device or a Sideband contact.
Connected Devices
No devices yet — add one above or wait for an announce.
Use DroneBridge ESP32 (ws://192.168.4.1:5760),
mavproxy--out=wsserver:0.0.0.0:5760, or any MAVLink WebSocket bridge.
Run python3 bridge/atak_bridge.py on the device receiving soRD CoT detections
(default ws://localhost:4243). Red markers = high confidence ≥85%, orange = review 60–85%.
Scan to join session
or share the code above
Team Chat
0 online
0:00Recording… (tap ✓ to send, ✕ to cancel)
⚠️ No active sync session — open Team Sync first to connect