Read the landscape
Explore detailed topographic maps with contour lines and terrain shading. Add Waymarked Trails overlays for hiking and cycling, and choose from multiple base maps.
YOUR NEXT ADVENTURE STARTS HERE
Find your way
outside.
The detail of a topographic map.
The freedom to make your own way.
Explore paths, open your GPX tracks and keep the places that matter close at hand. OpenTopoMap Viewer brings it all to your Android phone.
Open source · Made for Android · Ad-free FOSS builds available
A DIFFERENT PERSPECTIVE
Every contour tells a story.Dopplersteig, Austria · GPX track view
TOPOGRAPHIC MAPSGPX TRACKS & WAYPOINTSROUTE PLANNINGOFFLINE TILES
01 / EXPLORE WITH CONTEXT
More than a line
on a map.
See the terrain, the trails and the places along the way. Bring your own route, or start with a place you want to reach.
Bring your own trail
Open GPX tracks, routes and waypoints. Inspect distance and elevation profiles, choose your track colour and keep the route in view as you explore.
Make it your map
Save markers with names, colours and labels. Discover nearby Wikipedia places, or use your markers as waypoints for route planning.
A destination in mind?
Set up routing Place search and route planning are powered by OpenRouteService and require your own ORS API key and an internet connection. Choose walking, hiking, cycling and other routing profiles.
A LOOK ALONG THE WAY
Your pocket field guide.
Real views from the app, from the first turn to a closer look at the climb ahead.
Keep the bigger picture.
Follow your track through a landscape full of detail.
Know what lies ahead.
Check the track details and inspect the elevation profile.
Stop somewhere interesting.
See waypoint information without losing your place.
Screenshots show an earlier app version. The current interface may differ.
02 / PREPARE BEFORE YOU GO
Less signal.
Still a map.
Download a regional OpenTopoMap tile package before you head out, then import it into the app’s map cache.
READY-MADE PACKAGES: EUROPE
Browse offline maps Missing a European region? Request a package ↗A little preparation goes a long way.
- Download your region
Choose a package from the catalogue and save the ZIP to your phone. Keep it zipped.
- Import the tiles
In the app, open Settings → Cache → Import offline tiles and select your ZIP.
- Select the offline source
Under Settings → Screen, set OpenTopoMap tile source to OpenTopoMap (Archive/Preloaded). Select OpenTopoMap in Layers.
- Check before heading out
Pan to the region and test the included zoom levels in airplane mode. Routing and search still need internet.
Configure cache settings before importing. Clearing the map cache also removes imported tiles; keep the original ZIP.
03 / TAKE IT WITH YOU
The outdoors is calling.
Choose where you get OpenTopoMap Viewer.
BUILT IN THE OPEN
A small app.
A shared adventure.
OpenTopoMap Viewer is an independent, open-source Android project by Serge Helfrich. Feedback, bug reports and contributions help it grow.
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