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.

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

What’s New

Version 6.0.1

- Trail color is retained when exporting/importing GPX
- Trail/flag notes are included in import/export GPX
- If the app shuts down unexpectedly while recording a trail it will be recovered from backup when the app restarts. The trail is given the name "Recovered recording".

Ratings and Reviews

4.2 out of 5
61 Ratings

61 Ratings

Glatt2 ,

Good but frustrating

This free app has a lot of great things going for it. But then I get used to all the great things and want more. It drains my battery quickly when I try to record my route. It also suddenly drops routes that I am in the middle of recording. 2-3 miles into a recorded hike, and it will just stop recording and not save the route, even when the phone is plugged into a power brick.

It's great for seeing where you are and roughly measuring distances. And it's amazing for being free.

dartex ,

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.

BetterThanTV ,

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!


David Crawshay
12.7 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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