This extension for Karoo allows to use rolling fields and custom fields with double types in the same field (HR,Power,etc). Bell sound for Karoo

Custom TWRP for Unlegacy Android Project devices

Scripts to extract device vendor files and generate AOSP makefiles.

Barberfishes keeps Hammerheads sharp, in the ocean and on your bike. Native-feeling data field enhancements for the Hammerhead Karoo.

A Hammerhead Karoo extension to add a configurable W' (W Prime) data field

A Hammerhead Karoo extension to display speed with a colored background and icons

Smart climbing assistant for Hammerhead Karoo that helps riders make better decisions on climbs through real-time pacing, W′ balance analysis, power targets, and tactical terrain insights.

AI cycling coach for Hammerhead Karoo — real-time coaching alerts powered by rules + Gemini AI

Real-time pedaling efficiency extension for Hammerhead Karoo 2/3. Displays Balance, Torque Effectiveness, and Pedal Smoothness metrics from ANT+ Cycling Dynamics power meter pedals.

Free FTP testing extension for Hammerhead Karoo cycling computers. No subscriptions, no accounts, works completely offline.

Show W' balance as a data field on a Hammerhead Karoo

Device support for Nexus 5

Nexus 5 Qualcomm Proprietary Files

Maru OS on the Nexus 5.

MeteoRide — Weather along your MTB, cycling & walking routes

KSafe: free open-source Karoo safety + ride wellness extension. Reactive layer alerts your contacts on crash, missed check-in, speed drop, HR flatline or sustained high HR. Preventive layer tracks carbs and hydration with FIT export to Strava / Intervals.icu. Includes manual SOS, custom messages, and webhook actions.

GoPro® camera control for Hammerhead Karoo — record, shoot, and monitor your camera from your bike computer.

A python script that syncs folders with gpx to Hammerhead Karoo Collections

LG Proprietary Files for Nexus 5

Count burned calories based on HRM data