Download and view topographic maps covering the United States.

Topographic maps are useful for recreational activities such as hiking, canoeing, camping, fishing, mountain biking, geocaching, and exploring.

Choose from 2 map sources: USGS standard topographic or USGS hybrid topographic.

Download maps for areas of interest to view them later when you don't have Internet access or you don't want to use cell data.

Use location tracking to show where you are on the map, your elevation, and the accuracy of the GPS signal.

Flags are included with map downloads. Add flags (waypoints) to the map to mark your current location or other locations. Import flags from other sources using GPX files and geocache LOC files. Share flags with others using email or AirDrop. Organize your flag types by color, for example, geocaches, trailheads, and summits.

Trails are included with map downloads. Import trails (tracks) using GPX files you find on the Internet or from your personal GPS track collection. Share trails with others using email or AirDrop. Organize your trail types by color, for example, mountain bike trails, hiking trails, and OHV trails.

Record your own trails to show where you've been on the map, follow them later, and share with others.

Recorded trails include an elevation profile (distance/elevation chart).

Navigate to a flag by following the direction arrow that uses your compass heading. Useful for geocaching.

Measure the distance between points on the map.

Use file sharing to transfer maps, trails, and flags between your devices so you aren't required to download them again.

Note: Continued use of GPS running in the background can dramatically decrease battery life.

What's New

Version 5.5

- Shows current speed
- Option to use the location of a photo when adding a flag
- Support for iPhone X
- Shared flags retain the original color

Ratings and Reviews

4.2 out of 5
43 Ratings
43 Ratings

USGS and University Approved!!

As a team of geologists from the USGS and a State University who have used this app extensively for field work, this app is officially amazing! Doing field work in the back roads near Yellowstone, this app was invaluable. We used it for navigation, correlation to geologic maps, and even to mark the location of our vehicle before long hikes into the back country. Thoroughly impressed, 5/5. The only thing that would be handy is a data sync option in which you can actively sync waypoints between devices so everyone is on the same page.


Very useful in hiking

Used this app to confirm correct trailhead, check distance to junctions, and select correct turns at junctions.. trail breadcrumbs were entirely correct. Map interface a little frustrating to use so close to Canadian border, but with care was able to bring it up on trail while walking. Thanks for a useful product!


Best Topo maps

I was shopping for topographic maps app today, ready to shell out some $, so I tried 4 or 5 of them. To my surprise, the best app is free.

Just 2 things. Please add iPhone X support soon. Also, please log start and end time for each trail. Thank you for the fantastic app.


David Crawshay
10.6 MB
Requires iOS 11.2 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© 2016 David Crawshay


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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