mapper.one is a navigation app developed by Eric Crews.
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App Information
mapper.one is FREE to download. The download size is 44.50 MB. The latest version available is 2.0. The last update was on September 11, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on App Store June 2026.
Description
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.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
