CalTopo

1.28.1

CalTopo LLC

4.71

6,182 reviews

100,000+
Downloads

Free

Backcountry mapping evolved

4.71 · 6,182 reviews · 100,000+ downloads

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

About CalTopo

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

Download Statistics

CalTopo has been downloaded 320 thousand times. In the last 30 days, the app was downloaded 9 thousand times. It is ranked in the top 100 maps & navigation apps.

User Ratings

CalTopo is rated 4.71 out of 5 stars. The rating is based on 6.2 thousand ratings.

App Information

CalTopo is FREE to download. The APK download size is 33.10 MB. The latest version available is 1.28.1. The last update was on August 10, 2026.

Technical Requirements

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

Description

New on CalTopo: the CalTopo app is now satellite ready, allowing you to use many features of the app offline with satellite data!

More data about CalTopo

Price	Free to download
Total downloads	320 thousand
Recent downloads	9 thousand
Rating	4.71 based on 6.2 thousand ratings
Ranking	Highly ranked
Version	1.28.1
APK size	33.1 MB
Number of libraries	54
Designed for Android	5.1+
Suitable for	Everyone
Ads	NO ads

App Performance Report

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Alternative downloads for the CalTopo app

CalTopo compared with similar apps

Common keywords of similar apps

Caltopo Mapping Avalanche Teams Device Making Ability Layers Slope Angle Shading Sun Exposure Wind Precipitation Including Email Account App Data Maps Satellite Plan Offline Map Imagery Backcountry Features Real Time

Keywords missing from this app

Gps Live View Navigation Location Earth Explore World Route Find Travel Routes Street Navigate Free Outdoor Traffic Topo Share Trip Waypoints Turn Camera Discover Elevation Trail Feature Current Access Planning Canada Places Skiing Hiking Destination Compass Easy Road

Google Play Rating history and histogram

5.1K

690

170

120

Downloads over time

CalTopo has been downloaded 320 thousand times. Over the past 30 days, it averaged 300 downloads per day.

Changelog of CalTopo

Show changelog

Developer information for CalTopo LLC

CalTopo LLC

help@caltopo.com

Website

Legal name:

Address:

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Comments on CalTopo for Android

★★★★★ Daniel Shinkle · Jul 18, 2026

For advanced functions, the learning curve is a bit steep. But for hiking, the layers and ability to draw a path are excellent

★★★★★ Ananda Tracy · Aug 1, 2026

Great offline mapping application good for all kinds of sports and navigation off-road. Add sloped angles but also can calculate the elevation profile and angles along a route of your choice. This part requires web access but overall the application is really good at a really good price.

★★★★★ 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

★☆☆☆☆ 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.

★☆☆☆☆ Weathered Soul · Mar 29, 2026

Gasps can locate me in my office within a few meters, but Caltrop, with Location turned on and Permission allowed, says it can't locate anything because Location is turned off. Removed Caltrop.

★★☆☆☆ M C · Mar 16, 2026

It's messy and lacks many town names for areas as well as labels for fairly popular hiking areas. Even if these places DID have labels they'd be overshadowed by the ugly way too thick lines haphazardly scribbled all over the map

Google Play Rankings for CalTopo

Top rankings

Rank	Country	Category	List
180	United States	Maps & Navigation	Top Free
156	Canada	Maps & Navigation	Top Free
93	Australia	Maps & Navigation	Top Free

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Ranking history in United States

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Technologies used by CalTopo

CalTopo is requesting 16 permissions and is using 54 libraries.

Permissions

Development tools

test access to protected storage

Your location

approximate (network-based) location, precise (GPS) location

Network communication

view network connections, full network access

Hardware controls

take pictures and videos

System tools

prevent phone from sleeping

Extra

android.permission.ACCESS_ADSERVICES_AD_ID, android.permission.ACCESS_ADSERVICES_ATTRIBUTION, android.permission.ACCESS_MEDIA_LOCATION, android.permission.FOREGROUND_SERVICE, android.permission.FOREGROUND_SERVICE_DATA_SYNC, android.permission.FOREGROUND_SERVICE_LOCATION, android.permission.POST_NOTIFICATIONS, com.caltopo.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION, com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE

Ad network libraries

None found

Social libraries

None found

Development tools

Android Jetpack core

Android Architecture Components

Android Jetpack VersionedParcelable Android Jetpack Annotations Android Library Icon

Android Jetpack Annotations Android Jetpack Widgets Android Library Icon

Android Jetpack Widgets Firebase Android Library Icon

Firebase

Android Jetpack AppCompat AndroidX Activity Android Library Icon

AndroidX Activity Android Activity Saved State Android Library Icon

Android Activity Saved State AndroidX Loader Android Library Icon

AndroidX Loader

Android Transition Support Library Kotlin Android Library Icon

Kotlin

Android Support Library collections

Android Support VectorDrawable

AndroidX Legacy: Support Library core utils AndroidX App Startup Android Library Icon

AndroidX App Startup AndroidX Cursor Adapter Android Library Icon

AndroidX Cursor Adapter

AndroidX Local Broadcast Manager Google gson Android Library Icon

Google gson

Android Support Library Print

Android Support Library Document File AndroidX Widget ViewPager2 Android Library Icon

AndroidX Widget ViewPager2 AndroidX Emoji / Emoji2 Android Library Icon

AndroidX Emoji / Emoji2 Okio Android Library Icon

Okio

AndroidX Concurrent Futures JetBrains Annotations Android Library Icon

JetBrains Annotations IntelliJ IDEA Android Library Icon

IntelliJ IDEA AndroidX Tracing Android Library Icon

AndroidX Tracing AndroidX ProfileInstaller Android Library Icon

AndroidX ProfileInstaller AndroidX Multi-Dex Library Android Library Icon

AndroidX Multi-Dex Library AndroidX ExifInterface Android Library Icon

AndroidX ExifInterface Chromium Android Library Icon

Chromium

AndroidX DynamicAnimation Google Guava Android Library Icon

Google Guava AndroidX WebKit Android Library Icon

AndroidX WebKit AndroidX Resource Inspection Android Library Icon

AndroidX Resource Inspection Jetpack DataStore Android Library Icon

Jetpack DataStore AndroidX Preference Android Library Icon

AndroidX Preference Google Protocol Buffers Android Library Icon

Google Protocol Buffers ReactiveX Android Library Icon

ReactiveX

Jetpack WindowManager The Checker Framework Android Library Icon

The Checker Framework Dagger Android Library Icon

Dagger

AndroidX Privacy Sandbox Reactive Streams Android Library Icon

Reactive Streams CameraX Android Library Icon

CameraX

Apache Commons I/O Apache Commons Codec Android Library Icon

Apache Commons Codec AndroidSVG Android Library Icon

AndroidSVG Apache Commons Logging Android Library Icon

Apache Commons Logging metadata-extractor Android Library Icon

metadata-extractor TouchImageView Android Library Icon

TouchImageView Apache Commons Lang Android Library Icon

Apache Commons Lang Spring Framework Android Library Icon

Spring Framework

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