mapper.one
Community Maps for the Wild
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Free open-source trail maps for the wild places. Import GPX, KML & GeoJSON routes, cache offline tiles, record tracks, drop waypoints — and browse community adventures.
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Eric Crews, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- User Content
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Eric Crews
- Size
- 46.4 MB
- Category
- Navigation
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 The Adventure Collective