Topos US

Developer: Pignology, LLC

Current Version: 1.5

Last Updated: 4 years ago

Download Size: 1.6 MB - Download


Topos US is an app that provides access to download and view high resolution USGS topographic maps for the United States.

You will often see a date on a downloaded map that seems pretty old. This is the date of last physical survey. This could be a long time ago. Often maps will be compared to aerial photography to verify buildings but not always. I can't do anything about this and besides, mountains don't move that quick.
See the "Currentness Year and Version Year" section here:

This app includes 49 states, with most states having over 99% of the maps for the state.

Please note the following:
Alaska is not included.
Most of North Dakota and Florida are missing.

Access over 50,000 USGS Topo Maps, zoom, pan, rotate, etc.

Please contact us at [email protected] so we can resolve any issues quickly.

Have a feature request? Send those over to [email protected] too. I'm always happy to fix problems and make apps better.

Review Responses:
FishMike: Pinch to zoom in/out is in the app. Can you get in touch with me so we can figure out why it's not working for you?


Release Notes:

Maps will now open in the application registered for JPG viewing, most likely Preview. This is a last step effort to bypass inconsistencies across versions of Mac OSX with respect to a particular user interface object that was being used. Hopefully this allows for greater flexibility with what you can do with a downloaded map, i.e. duplicate, crop, rotate, print, pinch zoom, etc.

If you have questions or comments please email [email protected]



Most Helpful Reviews

Version 1.4
Review by seafrost

Topos US - I just downloaded this app and found it to be exactly what I was looking for. It’s very simple, allowing you to easily find your topo map of interest, download it quickly and view it at different zoom levels. You also turn the map to view it from different perspectives. There’s not much more to it, but that’s what I was hoping to find.

Found helpful by 2 out of 2 people
Version 1.5
Review by ChiefBiddie

Doesn’t have all the cities - Don’t buy! It only has a select number of locations and does not cover the entire state. I tried to find a map for Fitchburg, Massachusetts but there was not there. Waste of money, better to try to find images online. Very dissapointed.

Found helpful by 17 out of 18 people

More Reviews for Current Version

Version 1.5
Review by Joe Hiker

Has potential but not quite there - Had all the maps that I wanted to see, but in the viewer I found that the resolution was not enough. Too grainy for close-up viewing.

Found helpful by 6 out of 6 people