4.9
1.13K reviews
100K+
Downloads
Content rating
Everyone
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About this app

The best backcountry mapping tool on the web is now available on Android.

Cloud Sync


The CalTopo app integrates with your existing caltopo.com account, and edits sync between the two in seconds. Plan your trip using CalTopo's best-in-class mapping tools and then seamlessly transition to your phone. Once in the field, sync your GPS track back to caltopo.com in real time, or drop markers and instantly share them with friends.

Amazing Maps


Access CalTopo layers not available elsewhere, including the MapBuilder series, land management, sun exposure, fire activity and custom terrain shading. Pre-packaged map files (subscription required) make for speedy offline downloads and simplified data management. An elevation data layer supports measuring profiles and point elevations, even when offline.

Real-Time Data


NOAA weather forecast visualizations and MODIS satellite imagery aid in-field decision making. Coming soon: SNOTEL, weather stations, streamflows and forecast grid data points.
Updated on
May 14, 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.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Personal info and 4 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.9
1.06K reviews
Pearl Ward
April 15, 2024
I'm sure I don't use this app to its full potential, but I do use it when I'm out hiking and it's such a game changer. It's basically what I've always wanted: to be able to point my phone at a mountain and be able to see the name of it and the distance and the roads and trails that are on it. How amazing is that? I love that I can also track my progress so I won't get lost, mark points if I find an ideal picnic spot I want to return to, and discover new trails. It's absolutely wonderful.
1 person found this review helpful
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CalTopo LLC
April 24, 2024
We love to hear that you enjoy the app. If there is anything we can do for you, just let us know at help@caltopo.com!
Rick H
June 4, 2023
Been using this since the initial beta stages years ago, when it was practically unusable. Since the constant rapid improvements, this has been my only mapping app, and website, I use. It's far superior to others, of which I used them all at one point or another. Happy to pay the annual subscription knowing it helps improve maps for recreation & SAR.
16 people found this review helpful
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CalTopo LLC
June 8, 2023
Thank you for the review! We are working to continue improving the app going forward
Andrew Holman
March 25, 2022
This app has recently rappelled off the end of a rope. I don't know what happened. I have been such a huge advocate for Caltopo. I have convinced at least a dozen people to abandon Gaia and switch. I add features to OpenStreet so that Caltopo can pull them into their layers. With the latest updates, this app is now insanely buggy, particularly when downloading tiles. When I go to download, I get a black screen. Has the app crashed? Has it froze? Hard to tell. After over a minute it finally lets me select map tiles to download. I selected 32MB of files and, 16 hours later, on a gigabit connection...it still says "Download 2 files (32MB)" in notifications. The very functionality I pay a yearly fee for: downloading tiles for use without cell signal, is broken.
46 people found this review helpful
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What's new

"Heading up" travel mode. Bug fixes and performance improvements.