Advanced GPS terrain navigation with real-time elevation tracking and offline topographic maps for precision outdoor routing
Free offline maps included - No subscription required for core features
Unlock premium route packs and advanced terrain features
Promotional offers valid for new users only. Map pack purchases subject to regional availability. Bonus storage applies to premium tier subscriptions. Waypoint limits reset monthly on free tier.
TerraLineX processes GPS coordinates through a dual-layer positioning algorithm that cross-references satellite data with pre-loaded topographic databases. The route calculation engine analyzes terrain gradient, surface type classification, and elevation change rates to generate optimized paths that account for physical difficulty rather than just distance.
The offline mapping system stores vector-based cartographic data compressed at 1:25000 scale resolution, allowing detailed terrain visualization without cellular connectivity. Each map tile includes contour intervals at 10-meter vertical spacing, trail classification markers, and geocoded waypoint anchors that persist across app sessions.
Real-time tracking operates on a 2-second GPS refresh cycle with automatic route deviation alerts triggered when positional variance exceeds 15 meters from the planned trajectory. The breadcrumb logging system records coordinates, elevation, and timestamps at 30-second intervals, creating a complete movement history exportable in GPX and KML formats for third-party analysis.
Download high-resolution terrain maps with contour lines, elevation shading, and trail networks for use without internet. Maps compress to 60% smaller file sizes than standard raster formats while maintaining cartographic detail at zoom levels up to 1:10000 scale.
Live altitude tracking displays vertical gain/loss metrics, grade percentage, and cumulative elevation change throughout your route. The barometric altimeter cross-validates GPS altitude data to maintain accuracy within 3-meter vertical precision even in dense forest canopy.
Create custom routes by placing unlimited waypoints on the map interface. The routing engine calculates optimal connections between points using trail networks, road systems, or direct terrain traversal based on selected travel mode (hiking, cycling, off-road driving).
Automatic breadcrumb logging captures your complete movement history with coordinate timestamps, speed calculations, and pause detection. Recorded tracks display as color-coded paths showing pace variation, with statistical breakdowns of distance, duration, and elevation metrics.
Display and input positions in multiple formats including decimal degrees, degrees-minutes-seconds, UTM grid coordinates, and MGRS military grids. One-tap coordinate sharing exports location data in user-selected format for compatibility with external GPS devices and mapping software.
Toggle between satellite imagery, topographic contours, slope angle shading, and trail difficulty ratings. Overlay transparency controls allow simultaneous viewing of multiple data layers to assess terrain complexity before route commitment.
Developer: TerraTech Navigation
Current Version: 2.4.1 for Android
First Released: July 2026
Platform: Android 8.0 and higher
Update Frequency: Monthly feature releases with bi-weekly bug fixes
Free download for Android 8.0+. No account required. Core navigation features included. Installs in under 2 minutes with initial 12MB base map.
Download for AndroidRequires GPS sensor and 50MB free storage for offline maps. Optional in-app purchases for premium map regions. Rated E for Everyone.