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Android Apps > Maps & Navigation > CalTopo
CalTopo icon

CalTopo

1.30.1
CalTopo LLC
4.79
6,833 reviews
100,000+
Downloads
Free

Backcountry mapping evolved

CalTopo Screenshot 1 of 9
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Screenshots by CalTopo LLC, from the Google Play listing
View on Google Play

AppBrain's verdict

EstablishedLoved by users
Rating on Google Play
4.79
6,833 ratings
Installs
340 thousand
Last updated
September 24, 2026
Ads
No ads
Size
33.3 MB

CalTopo has 340 thousand installs. Users love it: 4.8 stars from 6,833 ratings.

Download on Google Play

Pros & Cons

  • Offline-first functionality with satellite-ready maps
  • Seamless cross-device synchronization between online and mobile
  • Rich backcountry data layers for planning (slope shading, weather, avalanche forecasts)
  • Comprehensive imagery and data layers (Topo, NAIP, public lands, weather)
  • Strong professional relevance for guides and rescue teams
  • Lacks explicit live navigation or routing features compared to some competitors

User feedback

Ratings and reviews on Google Play

Comments on CalTopo for Android

★★★★★ Adrian Huber · Sep 7, 2026
Very versatile and useful tool for mapping, planning, and organizing trips, search and rescue operations, and general landscape awareness by use of the Copernicus satellite views. Excellent tool.
★★★★★ Denny Salisbury · Jul 22, 2026
This is an incredibly valuable tool for Search and Rescue as well as first responders in general. Caltrop/Sarto has been a game changer!
★★★★★ Ivan Večanski · Jun 8, 2026
If you love maps this is the app for you. Tailor the map to your likes and add your tracks. Print it if you're out for a hike in the wilderness. Really useful
★☆☆☆☆ Mirz Moma · Oct 20, 2026
It ate my battery. My battery is back to normal now that it's uninstalled. Were you pinging my phone three times a minute or what?
★☆☆☆☆ Herb Zinn · May 28, 2026
BUG REPORT: under "map sheets", "add map sheet" says "loading shared map sheets", then hangs the app (on Samsung Galaxy S25 ultra) I can come back 5 minutes later, the whole user interface is greyed out, "shared map sheets" never populates.
★☆☆☆☆ Wahots Wolf · Jul 25, 2026
Completely useless without the ability to download offline maps. For an app. To be used. IN THE MOUNTAINS.
★★☆☆☆ Oliver C · Oct 25, 2026
Mandatory sign up. Process requires obtaining verification code from email. I do not have time for this. Uninstalled
★☆☆☆☆ Peter Burton · Jun 4, 2026
I'm not signing up via any of the main spamware providers. That's ridiculous. Uninstalled.

Google Play Rating history and histogram

6K
510
130
78
110

Store listing

By CalTopo LLC, from Google Play
Description by CalTopo LLC Written by the developer, not by AppBrain. Click to read.
New on CalTopo: the CalTopo app is now satellite ready, allowing you to use many features of the app offline with satellite data!

Take the best mapping app with you wherever you go with the CalTopo app for Android. Trusted by professional mountain guides, avalanche educators, and search and rescue teams, CalTopo has all the features you need to plan your next off-grid pursuit. Seamless integration between CalTopo online and your mobile device allows you to access and update your maps no matter where you are. Any changes you make will automatically sync across all devices, making exporting and importing your latest map a thing of the past.

The CalTopo app allows you to easily take your planning and navigation to the next level. Real time decision making in backcountry terrain is made easy with the ability to download maps and layers like slope angle shading to your device for offline use. Plan for conditions on your route with sun exposure, wind, precipitation and avalanche forecasts. View and track your location on the map using GPS, even if you are offline. Share maps with your teams or travel partners to plan collaboratively, and to ensure everyone has the necessary data. Monitor real time updates from the field, like your friends progress on a long outing with live tracking on shared maps.

Plan and navigate your next adventure with the CalTopo App today!

Map layers include:
• MapBuilder Topo, Hybrid and Overlay
• Forest Service Maps
• Scanned Topos
• Global Imagery
• Shaded Relief
• Slope Angle Shading (including high resolution elevation data where available)
• Parcel data
• Public Lands
• Weekly Satellite Imagery
• NAIP Satellite Imagery
• Sun Exposure
• Marine Charts
• Weather Forecasting (including wind, precipitation, and temperatures)
• Snow and Water Gauge Data
• Fire History/Activity
• And many more

Support and Feature Requests:
Email us at help@caltopo.com.

Recent changes:
NEW LiDAR Coverage Overlay

Safety and technology

Found in the app by AppBrain
Ads
No ads
Price
Free
Libraries
54
App size
33.3 MB
Needs Android
5.1+
Content rating
Everyone

Technologies used by CalTopo

16 permissions · 54 libraries
Subscribe to see full permission and library details

Releases

Updates seen on Google Play
Version
1.30.1
Launched
September 2020
  • Sep 24, 2026UpdateVersion 1.30.1
  • Sep 11, 2026UpdateVersion 1.30
  • Sep 3, 2026UpdateVersion 1.29.1
  • Aug 26, 2026UpdateVersion 1.29
  • Aug 10, 2026UpdateVersion 1.28.1
Show all changes Show fewer

Alternatives

Similar apps and more from CalTopo LLC

Alternatives to CalTopo

Backtrack: GPS Adventure Maps icon Backtrack: GPS Adventure Maps
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Outmap: Ski & Snowboard Maps icon Outmap: Ski & Snowboard Maps
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onX Backcountry Trail Maps GPS icon onX Backcountry Trail Maps GPS
onXmaps
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Topo Maps+ icon Topo Maps+
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BackCountry Navigator XE: Topo icon BackCountry Navigator XE: Topo
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Earth Map: Satellite View 3D icon Earth Map: Satellite View 3D
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GPS Waypoints Navigator icon GPS Waypoints Navigator
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Installs

Tracked by AppBrain
Last 30 days
7.2 thousand
Per day
240
30-day average
Play install range
100+ thousand
Launched
September 2020

Installs over time

CalTopo has been installed 340 thousand times. Over the past 30 days, it averaged 240 installs per day.

Rankings

Google Play top charts
Highest rank
#107
Chart
Top Free
Maps & Navigation
Country
Australia

Google Play Rankings for CalTopo

Top rankings

Rank Country Category List
165 United States Maps & Navigation Top Free
157 Canada Maps & Navigation Top Free
107 Australia Maps & Navigation Top Free
Show all market rankings

Ranking history in United States

About the app and developer

About CalTopo

CalTopo is a maps & navigation app developed by CalTopo LLC.

Download Statistics

CalTopo has been downloaded 340 thousand times. In the last 30 days, the app was downloaded 7.2 thousand times.

User Ratings

CalTopo is rated 4.79 out of 5 stars. The rating is based on 6.8 thousand ratings.

App Information

CalTopo is freely available from Google Play. The APK size is 33.34 MB. The latest APK version available is 1.30.1. The last update was on September 24, 2026.

Technical Requirements

CalTopo requires Android 5.1+ or higher. The app has a content rating of Everyone. The APK has been available on Google Play since September 2020.

CalTopo is made and published by CalTopo LLC. AppBrain is an independent app data site and isn't affiliated with CalTopo LLC. The app name, icon, screenshots and description belong to CalTopo LLC and are shown as published on Google Play.

App Performance Report

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Get PDF Report — $29

Developer information for CalTopo LLC

CalTopo LLC

help@caltopo.com

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Share CalTopo

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Overview Alternatives History Reviews Rankings Technology
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