US Topo Maps

Contains adsIn-app purchases
4.6
9.44K reviews
1M+
Downloads
Content rating
Everyone
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About this app

Easy to use outdoor navigation app with free access to the best available maps and aerial imagery for the USA.

Choose between 30+ map layers (topos, aerials, sea charts, ...) to plan the perfect trip and
turn your Andoid Phone/Tablet into an outdoor GPS for offline trips into the backcountry.

Add easily maps from other sources (GeoPDF, GeoTiff, Online Map Services like WMS, ...)

Available basemap layers for USA:
• USGS National Map Topo
• USGS National Map Imagery Topo
• USGS National Map Imagery
• USGS NAIP HiRes Imagery
• USGS Topo traditional DRGs: Seamless coverage of topo maps of the USA at Scales 1:250.000, 1:100.000, 1:63.000 and 1:24.000/25.000
• FSTopo Forest Maps
• NOAA Nautical RNC Charts
• National Elevation Maps (Hillshade, Slope Map, Aspect Map)

Worldwide basemap layers:
• OpenStreetMaps (5 different map layouts), also downloadable in space saving vectorformat
• Google Maps (Satellite images, Road- and Terrain-Map)
• Bing Maps (Satellite images, Road-Map)
• ESRI Maps (Satellite images, Road- and Terrain-Map)
• Earth At Night

Configure a basemap layer as an overlay and utilize a transparency fader to seamlessly compare maps with each other.

Add maps from other sources:
• Import raster maps in GeoPDF, GeoTiff, MBTiles or Ozi (Oziexplorer OZF2 & OZF3)
• Add web mapping services as WMS or WMTS/Tileserver
• Import OpenStreetMaps in Vectorformat, eg complete USA for just some GBs

Available US map Overlays - add additional information to any other base map:
• Public Land Ownership (PAD-US 3)
• National Hydrographic Dataset
• Motor Vehicle Use Map (USDA)
• Elevation Contourlines
• 4WD Trails
• Trails
• Roads, Railroads, Airports

Available worldwide overlays:
• Hillshading overlay
• 20m Contourlines
• OpenSeaMap

There is no perfect map. Toggle between the different map layers or use the compare maps feature to find the most interesting route. Especially the old traditional DRGs contain many small pathes or other features that are missing on modern maps.

Main features for outdoor-navigation:
• Download map data for OFFLINE USAGE
• Measure pathes and aereas
• Create and edit Waypoints
• GoTo-Waypoint-Navigation
• Create and edit Routes
• Route-Navigation (Point-to-Point Navigation)
• Track Recording (with speed, elevation and accuracy profile)
• Tripmaster with fields for odometer, average speed, bearing, elevation, etc.
• GPX/KML/KMZ Import/Export
• Search (placenames, POIs, streets)
• Get elevation and distance
• Customizable datafields in Map View and Tripmaster (e.g. Speed, Distance, Compass, ...)
• Share Waypoints, Tracks or Routes (via eMail, Dropbox, WhatsApp, ..)
• Use coordinates in WGS84, UTM or MGRS/USNG (Military Grid/ US National Grid), What3Words• Track Replay
• and many more ...

Use this navigation app for outdoor activities like hiking, biking, camping, climbing, riding, skiing, canoeing, hunting, snowmobile tours, offroad 4WD tours or search&rescue (SAR).
Add custom waypoints in longitude/latitude, UTM or MGRS/USNG format with WGS84 datum.
Import/Export/Share GPS-Waypoints/Tracks/Routes in GPX or Google Earth KML/KMZ format.
See animated NEXRAD rain radar to make accurate predictions when raining will start/stop

Please send questions, comments and feature requests to support@atlogis.com
Updated on
Mar 5, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Personal info, App activity and 2 others
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.6
8.54K reviews
Lee Kern
February 3, 2024
Overall, I like the app. The only reason I downloaded it was to use the Hillshade layer(LIDAR). When using this layer, the map fails to download completely, and the blocks that do download take minutes to do so and sometimes disappear. I've tried while connected to a very strong internet connection as well on 5g and 4g. The topo and satellite maps load like they should. Is this a bug? Can this be fixed with a setting?
25 people found this review helpful
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Lou Novak
March 13, 2024
the program works but the map images arent sharp and are hard to see on a phone screen. it has a lot of potential to be a close rival to OnX but as it is, it can only tell you where you are currently in relation to surrounding landmarks that are shown on the map. as a route planning tool it is worthless until the zoom graphics get enhanced. if one has patience and a general understanding of the area they are in, it may help to become un-lost, or less confused as to which direction to go..
2 people found this review helpful
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Daniel Fagerlie
November 23, 2023
Amazing app for years! For those who want a stable offline or online map client for running, hiking, walk etc that can record tracks, this is perfect! For more advanced users, you can export the tracks (automatic or manual). I use Syncthing to automatically copy the tracks over to my laptop and server so I can do cool things like open up my recordings on QGIS. I'm thinking I should now contribute to OpenStreetMaps by uploading my trail recordings. Highly recommend purchasing.
33 people found this review helpful
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What's new

・Added new aeronautical & contour layers
・New layer 'Mexico 20k & 50k & 250k'
・Layer 'Traditional Topos' now also covers Canada
・Improvements & Fixes