Reviews of Hammerhead Companion

By: SRAM LLC

List of user reviews and ratings for Hammerhead Companion

Total ratings

2.00 (Rating count: 93)

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Review summary

Reviews show a split: K2 users face no compatibility and feel abandoned, while newer-model users see ongoing updates and some positive integration. The top issues are lack of K2 support, perceived obsolescence and upgrade pressure, reliability problems, and limited device compatibility. Positive notes focus on ongoing app updates, platform evolution, and initial iOS deployment, indicating a developing but uneven app experience.

Pros

Ongoing updates and improvements across the Hammerhead/Karoo app and its devices, with users noting progress over multiple generations.
Positive sentiment from some users about app integration and platform evolution, including cross-generation updates.
Initial excitement around having an iOS companion app, signaling platform expansion (despite mixed later feedback).
Positive notes on some app features and integrations (e.g., cross-device compatibility and data handling) as the platform matures.

Cons

Lack of support for Karoo 2 (K2) and no backward compatibility; many reviews state the app does not work with K2.
Perceived obsolescence and upgrade pressure—users feel the app and ecosystem exclude existing, purchased hardware in favor of newer models.
General reliability and usability concerns—numerous reviews describe the app as useless, not working, or unreliable.
Limited device compatibility—significant sentiment that the app only properly supports newer Karoo models (e.g., Karoo 3), leaving K2 users out.
Missing key features/requests (e.g., HealthKit integration) as notable but less widely repeated requests.

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User Reviews

Recent rating average: 2.20

All time rating average: 2.00

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35% (33)

Date	Author	Comment
2026-06-01	Ze*****	Oh you have a K2 you bought for $500 and want to easily send and track things with smartphones that have been around for a decade? Too bad, pay another $500 for all new hardware and one slightly improved codebase of software, so now you’re $1000 out of pocket equal to or more expensive than a smartphone itself, for software features that could be a patch. Mind you one major draw of the Hammerhead is that it’s basically a smartphone with robust software capabilities.
Oh you have a K2 you bought for $500 and want to easily send and track things with smartphones that have been around for a decade? Too bad, pay another $500 for all new hardware and one slightly improved codebase of software, so now you’re $1000 out of pocket equal to or more expensive than a smartphone itself, for software features that could be a patch. Mind you one major draw of the Hammerhead is that it’s basically a smartphone with robust software capabilities.
2026-05-28	Wh*****	It does what I need for now, works well with the Karoo 3 and haven’t had any issues as such.
It does what I need for now, works well with the Karoo 3 and haven’t had any issues as such.
2026-05-28	jj*****	The ability to see my routes, rides, and workouts on my phone is nice. The Apple Health integration has improved significantly, the two remaining enhancements I’d like to see are elevation and route information included with the data sent to Apple Health
The ability to see my routes, rides, and workouts on my phone is nice. The Apple Health integration has improved significantly, the two remaining enhancements I’d like to see are elevation and route information included with the data sent to Apple Health