The Karoo Companion App is a free lifestyle application developed by Hammerhead for Android users. It is designed to bring your phone's notifications onto your Hammerhead Karoo 2, so you don't miss important messages while riding.

The app is easy to use, and you can connect to your Karoo 2 via Bluetooth from within the app. Once connected, you can see your phone's notifications on your Karoo 2 while you ride. It is important to note that this app is only for Android phone notification mirroring. If you want internet connectivity while riding, you will need to either connect your Hammerhead Karoo to your phone's WiFi hotspot or insert a SIM card.

Overall, the Karoo Companion App is an excellent tool for those who want to stay connected while riding. It is simple to use and ensures you don't miss important calls or messages. If you're an Android user and own a Hammerhead Karoo 2, this app is definitely worth checking out!