TrailMapper
GPS trail recording and mapping for property owners and trail builders
Download Free on Google Play
GPS trail recording and mapping for property owners and trail builders
Download Free on Google PlayWhether you're laying out a hunting property, building a mountain bike trail system, or mapping an ATV network — TrailMapper gives you the tools to record it, connect it, and hand it off to the property owner in a format they can actually use.
GPS-accurate trail segments. Exportable KML and GPX. No subscriptions, no cloud account required.
Walk, ride, or drive your trail lines while TrailMapper records the GPS path in the background. Connect segments into a full network, add points of interest, then export the whole thing as a KML or GPX file the property owner can drop straight into Google Earth or OnX.
Trail builders can also tie excavator work quotes directly to trail segments — keeping job scope and pricing in one place instead of scattered across notes and spreadsheets.
Records trail segments via a background foreground service using fused location. Keep your phone in your pocket while the line gets laid down.
Connect segments into a full trail network. Endpoint snapping, trail splitting, and edit mode let you clean up the map after the fact.
Outline the whole property, or mark separate zones — a food plot, a leased section, a no-cut buffer — each as its own named boundary with an optional colored shade. Every boundary exports to KML and GPX, shaded, so it opens the same way in Google Earth or OnX.
Mapped a property in pieces, or split the work across two phones? Merge two maps into one — every trail, POI, and boundary from both, combined into a single map. The originals stay untouched.
A layers panel toggles trails, POIs, and boundaries on or off independently — and doubles as a locator: tap any trail, POI, or boundary by name and the map flies straight to it.
Read the land before you walk it. Choose your base map — standard, OpenTopo, USGS topo, or Esri satellite — or the new USGS 3DEP layer: a LiDAR-derived hillshade that shows every ridge, draw, bench, and creek bottom in relief. It renders live so it stays sharp at any zoom, and it can also ride as a semi-transparent terrain overlay on top of satellite or topo. Public-domain USGS data — US coverage.
Export your full trail network as KML or GPX. Works directly with Google Earth, Google My Maps, OnX, and most other mapping tools.
9 preset POI types with canvas-drawn icons — gates, water crossings, parking areas, hazards, and more. Pinned to coordinates on the map.
Generate line-item excavator quotes tied to trail segments. Share quotes as a formatted summary for the property owner or client.
OSMDroid-powered offline tile caching so the map works in the field without cell service. No Google Maps billing.
Sparkline elevation profile per trail segment so you know what the grade looks like before you start cutting.
Back up your property data to Google Drive or any local location via Android's Storage Access Framework. No account required.
Record, map, and quote trail work for clients. Hand off a KML when the job is done.
Map your hunting property, ATV trails, or horse paths. Import the KML into Google Earth and share with guests.
Plan flow and layout before you start digging. Export to OnX or Trailforks for the riders.
Document trail systems on managed land. Maintain records of segment locations and trail network structure.
Record guest routes, waypoints, and hazard markers. Export route data for trip planning and documentation.
You don't need a surveyor or a subscription to get a working map of your own land. Your phone's GPS gets you within a few feet — plenty for planning trails, documenting dirt roads, and laying out food plots or fence lines. Here's the process.
Start recording and walk the perimeter — or drive it on an ATV. Drop a waypoint at each corner and every sharp change of direction. The recorded track becomes your property outline.
Record each dirt road, ATV trail, or path as its own track as you travel it. String a few together and you've got a trail network you can see, measure, and plan against.
Drop points of interest for gates, culverts, stands, water crossings, parking, and hazards — anything you'll want to find again or hand off to a guest or crew.
Export to KML or GPX to open your map in Google Earth, load it onto a GPS, share it with guests, or hand a client the file when the job's done.
TrailMapper does all of this — record, connect a trail network, mark POIs, and export six formats — free for two properties, offline, no account. It'll even measure a planned trail's length to help you quote the dirt work. Download it free on Google Play →
Walk or ride the perimeter with GPS recording on, dropping a marker at each corner and sharp turn. TrailMapper turns that track into a property outline you can measure and export. Just remember phone GPS is accurate to about 3–10 feet — fine for planning and documentation, but not a substitute for a licensed survey on a legal boundary.
TrailMapper records each trail as you ride and connects them into a network you can export as GPX. Unlike off-road apps built around discovering public trails on a subscription, it's made for recording and documenting your land — and it's free for two properties.
Yes. TrailMapper is free for two properties with every feature. Unlimited properties, backup and restore, and KML/GPX import are a one-time Pro unlock — no monthly bill, unlike parcel-viewer apps that charge every month.
Yes — export to KML or GPX. Open them in Google Earth, load them onto a GPS, or hand a client the file when the trail work is done.
Yes. There's a USGS 3DEP layer — a LiDAR-derived hillshade that shows the land's true relief: ridges, draws, benches, and drainages. Run it as the base map, or drop it as a semi-transparent terrain overlay on top of satellite or topo to read the ground and the shape of the land at once. It renders live from USGS's public-domain elevation data, so it stays sharp at any zoom. Coverage is the United States.
Yes. Map tiles cache for field use and all recording happens on your device, so you can map deep in the backcountry with no signal.
Typically 3–10 feet — plenty for laying out trails and food plots, documenting roads, and getting a solid working picture of your boundaries. For a legal boundary (a fence, a sale, a dispute), still use a licensed surveyor.
Effective Date: April 2026
TrailMapper is built on a simple principle: your trail data is yours. We don't collect it, store it, or sell it.
All data you enter — properties, trail segments, GPS coordinates, POIs, and quotes — is stored locally on your device using an on-device database. Nothing is transmitted to ProDirt LLC servers because there are none.
TrailMapper uses your device's GPS to record trail paths while recording is active. A persistent foreground notification is displayed whenever location recording is in progress. Location data stays on your device.
Background map tiles are loaded from OpenStreetMap servers via OSMDroid. No personal data or GPS coordinates are included in tile requests.
If you choose to back up your data, TrailMapper uses Android's Storage Access Framework. You pick where the backup goes — local storage, Google Drive, or elsewhere. ProDirt LLC has no access to your backup files.
Questions about privacy? Email us at prodirt.co@gmail.com
Record it. Connect it. Hand it off.
Download TrailMapper FreeLegal