399 reviews
Content rating
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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
Jun 2, 2023

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 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

372 reviews
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.
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CalTopo LLC
June 8, 2023
Thank you for the review! We are working to continue improving the app going forward
Catherine Pham
July 13, 2022
I used to really like Caltopo. My only problem with it was the inability to "move" tracks between maps. You have to download then reupload. But sometime in the past 6 months, the app has become increasingly buggy. It's ridiculously slow, downloading is almost impossible because the app seems to freeze 95% of the time, and all sorts of other issues. I'm probably going to switch over to Gaia or something else after my subscription is up.
8 people found this review helpful
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Bret Hess
August 1, 2022
Very good, but hard to create a route on the app. I love the clear topo maps, the tracking and ability to download all the map area info with subscription. Creating a route and getting stats on it is easy on a computer on the website with a mouse, but in the app I can't find a way to select a trail segment to add. So all I get in my route are straight line segments as I tap, not trail segments.
6 people found this review helpful
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What's new

Several bugfixes in addition to the map load and sync performance improvements in 1.4.9