Hammerhead Companion

3.0
281 reviews
10K+
Downloads
Content rating
Everyone
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About this app

Enhance your cycling experience with the Hammerhead Companion App! Access your Android phone’s calls, texts, and notifications on your Karoo, as well as upload rides, sync routes, and much more, all without the need for Wi-Fi.

- Ride Upload: Automatically upload your ride to your favorite training platforms like Strava, Ride With GPS, TrainingPeaks, and more!
- Route To Point: Pull up Google or Apple Maps on your phone and send a pinned location directly to your Karoo via the Companion App.
- Route Sync: Instantly sync routes from the Hammerhead Dashboard to Karoo without Wi-Fi. The Hammerhead Companion App allows you to easily share routes with friends or load a route on the fly.
- Workout Sync: Connect to your 3rd party training platforms wherever you are so you never miss a workout. Adjust your workout for the day and Karoo will sync it automatically.
- Live Tracking: Quickly share your live tracking link utilizing your phone’s native share menu and give your friends and family peace of mind while you’re out on the road.
- Phone Notification Mirroring: the Hammerhead Companion App allows you to receive texts, phone calls, and other phone notifications on your Karoo

Visit hammerhead.io to learn more.
Updated on
Nov 10, 2025

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
App activity, App info and performance, and Device or other IDs
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

2.9
275 reviews
Anne and Ken
December 16, 2025
Live track does not work properly. This is from AI and in my view is seriously bad for my k3 'compatibility bug specific to the app/Samsung Fold OS combination. ​Since we have exhausted all user-accessible system settings: ​We know the notification toggle is broken/greyed out. ​We know Live Track fails mid-ride due to background restriction. ​We cannot manually set the app to "Unrestricted" because the menu is missing/uncooperative.'
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Illy Shaieb
October 17, 2025
The application itself is working just as it should. I have not encountered any problems or difficulties with it.
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Scott Thomas
August 29, 2024
This app is no longer compatible with Samsung S23 (and probably other Samsung phones), so you can't receive emails, etc, notifications on the Karoo. The Companion app doesn't appear in the app notifications list at all, and under the app settings, it shows "all notifications from this app are blocked" Other apps have also had this problem and been fixed by their developers (eg, Sure Petcare), who noted that they had to fix a permission issue with Android. Shame because it used to work well.
3 people found this review helpful
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What’s new

We’ve added an account verification step on Karoo sign-in for unverified Hammerhead accounts.

App support

About the developer
Sram, LLC
support@sram.com
1000 W Fulton Market Fl 4 Chicago, IL 60607 United States
+1 605-269-0037

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