mapper.one vs Trailseek

mapper.one is a free, open-source field mapping app built for hikers, overlanders, and backcountry explorers. Standing on the shoulders of OpenStreetMap and the global open-data community. IMPORT YOUR MAPS Bring in routes from any source — GPX from Garmin or Strava, KML/KMZ from Google Earth or Avenza, and GeoJSON from any GIS tool. Every feature, waypoint, and track renders immediately on a full-screen map. OFFLINE-FIRST Download map tiles for any region before you leave signal. Saved tiles live in durable device storage so they survive cache pressure — your maps are there when the trail goes dark. RECORD YOUR ROUTE Hit record and mapper.one traces your path with timestamps and elevation data. Drop waypoints mid-trip with photos and notes — field markers that stay attached to the track. COMMUNITY LIBRARY Browse thousands of trails and overlanding roads contributed by the Adventure Collective and the open-data community. Filter by region, search by name, or let the app find routes near you. Download any route to your library with a single tap. SHARE WHAT YOU FIND Publish your recorded tracks to the community so others can follow in your footsteps. Open-source, open-access, community-first. Free forever. No ads. No subscriptions. No account required. Built with deep gratitude to OpenStreetMap contributors, the Leaflet project, and every surveyor and trailblazer who mapped the wild places before us.

Trailseek is an offline GPS app for hiking and backcountry travel. It records your track, marks waypoints, shows where you are on topographic and satellite maps, and points you back to any spot. Your location and data stay on your device. Maps - Free maps with no account: Apple Maps, satellite, hybrid, OpenStreetMap, OpenTopoMap, and USGS Topo. - A 3D terrain option adds relief to the Apple maps. - Download USGS Topo areas and use them with no signal. - Turn on a coordinate grid for latitude and longitude, UTM, or MGRS and USNG. Waypoints - Drop a waypoint at the map center, your location, or a long press. - Set a name, an icon, a color, and a note. - Attach photos from the camera or your library. - Search and sort the list. Tracks - Record distance, time, speed, and elevation. - Elevation comes from the barometer and GPS together. - Recording continues with the screen off. - Review a saved track's stats and elevation profile. Navigation - Follow a compass arrow to a waypoint, with distance, bearing, and ETA. - It uses GPS and the compass, so it works with no signal and no map. Coordinates - Show your position as decimal degrees, degrees decimal minutes, or degrees minutes seconds. - UTM and MGRS/USNG are always there. - Tap a value to copy it. GPX and sharing - Import and export waypoints and tracks as GPX. - Share a waypoint or track as a file, plain coordinates, or a maps link. Drawing - Draw on the map with Apple Pencil on iPad or a finger on iPhone. - Drawings stay fixed to the ground as you pan and zoom, and share between devices. iPad - The map fills the screen and the panels open as popovers. Apple Watch - Record a track, mark and browse waypoints, and navigate from your wrist. - See your track and waypoints on the watch map. - Waypoints and tracks sync with your iPhone. More - A ruler measures distance and bearing between two points. - Sunrise, sunset, moonrise, moonset, and the moon phase for your location. - A trip computer tracks distance, moving time, and average speed. Privacy - No account, no sign-in, no ads, and no tracking. - Your tracks, waypoints, photos, and location stay on your device. Trailseek does not collect them.