
Buster StudiosTerraTac / Android
A Buster Studios app / TerraTac
Field context,
in one view.
TerraTac is a free Android field app for MGRS/UTM maps, live BLM/public-land status, and G1/G7 ballistics with range rings.
MGRS
READY
READY
Made for the field
Maps, land, and dope — close at hand.
Where am I? What kind of land is this? How far is that? TerraTac keeps map, grid, and ballistic planning in one place.
- MGRS/UTM military grid
- Live BLM/public-land status
- G1/G7 ballistics with range rings
- GPS track-back and night vision
Know the limits: Phone GNSS is typically ~5–30 m; compass readings can be affected by metal; ballistics are model estimates — confirm zero with live fire; land data is approximate — verify regulations.
A better field stack
Try TerraTac on Android.
Free with ads. Verify the app output against real-world conditions and official information.