Wildland Atlas: Offline Topo

Cell service dies five miles past the trailhead. Deep in a granite cirque or under dense redwood canopy, phone GPS drifts and cloud maps go blank. Wildland Atlas keeps you found with zero cell bars, zero accounts, and zero paywalls on your safety.

Built for the High Sierra, coastal redwoods, and Mojave washes, Wildland Atlas turns your iPhone, iPad, iPhone Duo, and Apple Watch into a self-contained field instrument. Every vector contour, water report, land boundary, and botanical specimen lives on your device. Flip on Airplane Mode at the trailhead and navigate with total autonomy.

Your Safety Never Sits Behind a Paywall
Backcountry safety belongs to everyone. Core 2D USGS topographic maps, live GPS positioning, off-trail corridor warnings, and emergency CalFire wildfire and USGS seismic alerts are 100% free forever. You never create an account, surrender an email, or hit a login wall in the dark.

When you want deeper instrumentation, upgrade to Wildland Pro ($4.99/mo or $29.99/yr with a 7-day free trial) or unlock the one-time Sovereign Lifetime Pass ($79.99 with Family Sharing) for 120Hz 3D terrain flythroughs, LiDAR slope shading, and multi-quadrangle offline packs.

Field Instrumentation & Cartographic Systems:

• 100% Offline Flight Architecture
Download crisp USGS 7.5-minute vector contours, shaded relief, and sub-meter satellite orthophotos before leaving pavement. Maps load instantly in wilderness dead zones with zero cellular or satellite signal.

• 15-State Kalman Filter Dead Reckoning
Canyon walls and heavy timber scatter satellite signals. When standard GPS drifts, our 15-state Error-State Kalman Filter (ESKF) and Zero Velocity Updates (ZUPT) fuse inertial step sensors to lock your bearing, stride pace, and sub-meter position.

• 120Hz 3D Mountain Horizon & Demo Walk
Preview every switchback and pass before lacing your boots. Fly along Catmull-Rom trail splines at 120Hz across true-to-scale 3D elevation models with solar ephemeris shadows and smooth …