129 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
Mar 7, 2022

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
129 reviews
Dustin G.
April 2, 2022
Cancelled my subscription. As you move around the map, you constantly zoom in and out, because of the poorly configured double tap to zoom function. The mobile app is absolutely useless for exploring as a result. CalTopo's help responded it's "uncomfortable" but "get used to it" (Android App #601). Now I need to find a mapping app that has PANNING figured out.
17 people found this review helpful
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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.
18 people found this review helpful
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Jim McInnis
April 13, 2021
I have been using this app for a couple of months now in northern New England and I am generally pleased. Downloading tiles is very easy and quick compared to my previous app and the maps open quickly. Some areas of improvement are needed such as the ability to rename recorded tracks later on and the ability to download more map layers for offline use such as marine charts. I also wish the Mapbuilder Topo base map indicated the names of towns to make locating areas of interest easier.
6 people found this review helpful
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What's new

Minor bug fixes.