Hammerhead Companion1.36.0 - App Store

Enhance your cycling experience with the Hammerhead Companion App! Transfer crucial data from your mobile device to your Karoo with - or without - 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 Notifications: See your phone’s notifications on your Hammerhead Karoo when you ride.

The Hammerhead Companion App is designed specifically for use with the all-new Hammerhead Karoo bike computer. Visit hammerhead.io to learn more.

Version History We fixed an issue where activities with pauses that span multiple laps could cause an upload failure to Apple Health. 1.36.0 Oct 1 We updated our Apple Health integration so that paused time is not included in the workout time. 1.35.0 Aug 20 General bug fixes and performance improvements. 1.34.0 Jul 9 General bug fixes and performance improvements. 1.33.0 May 28 We updated our Apple Health integration so that activities synced to Apple Health from Karoo show power, heart rate, cadence, and speed as time series data rather than a single average value. 1.32.0 May 14 We’ve fixed an issue with Apple Health sync would intermittently only sync time of workout without any other data. 1.30.0 Apr 23 Performance improvements and optimizations 1.29.0 Mar 19 Various app fixes and improvements. 1.28.0 Mar 5 General fixes and app improvements 1.27.0 Feb 5 Introducing Apple Health integration. iOS users can now link their Hammerhead account to their Apple Health account so that rides logged on Karoo sync to Apple Health.
- Riders can connect their Apple Health account by going to the Companion App settings and selecting Apple Health Data.
- Please note that Apple Health relies on the Companion App to sync activities, so riders must have the app open to initiate the sync. 1.26.0 Jan 8 We’ve added an account verification step on Karoo sign-in for unverified Hammerhead accounts. 1.25.0 11/13/2025 We fixed an issue where transfers of content (pin, route, etc.) from iOS to the Companion App were failing after a first successful transfer. 1.24.0 10/30/2025 Introducing live tracking auto-share
- Riders can now add email contacts to automatically receive a live tracking link when a ride starts. Auto-share can be setup via the Companion App settings. This is available for both new Karoo and K2. Live tracking requires internet connectivity via Companion App or hotspot/SIM card.
- We've added the ability to share a 24-hour link. This link will expire after 24 hours.
- We've added the ability to toggle live tracking on/off via the Companion App. 1.23.0 10/02/2025 We added a message to add Karoo and show which account a user is signed into, when you have not paired a device to the companion app. 1.16.0 03/06/2025 We fixed an issue which caused workouts with '&' in the file name to not be upload via iOS. 1.15.0 02/20/2025 - We fixed a bug that caused the current location button to not work when building a route in the Companion App.
- We fixed a bug that caused external links to not open from the Companion App.
- We fixed a bug that caused routes shared directly from Google Maps to the Companion App to fail. 1.14.0 01/23/2025 You can now sideload a third-party app using an APK file through the Companion App (new Karoo only). Previously this was limited to URL’s with a downloadable APK link. Long press an APK file to initiate sharing through the app for easy installation on Karoo. 1.13.0 01/09/2025 You can now sideload third party apps on Karoo by sharing a URL linked to an APK file (New Karoo ONLY). See Karoo release notes for more details. 1.12.0 12/12/2024 We added the ability to see your rides, routes and workouts in the Companion App. The new functionality embeds Hammerhead Dashboard data in the app to easily plan and view your ride. 1.11.0 11/27/2024 We added the ability for riders to login to the Companion App using SRAM SSO. 1.9.0 09/19/2024 We made a number of performance improvements and optimizations. 1.7.0 08/08/2024 - We have added the ability to see your last known battery status of Karoo in the Companion App.
- We have made UX improvement to the delete account flow in the Companion Apps to prevent users from inadvertently deleting their Hammerhead account.
- We fixed an issue where you could not remove all Karoo’s from your devices list in the Companion app. 1.6.0 07/25/2024 - Various under-the-hood improvements. 1.5.0 06/13/2024 - We’ve added a brief tour to introduce Companion App features to new Karoo users.
- We’ve fixed an issue where sharing Google Maps locations with non-ASCII characters in the name would prevent ride upload, route sync, and more from working between the Companion App and Karoo. 1.4.0 05/30/2024 1.3.0 05/15/2024