The latest major update introduced Apple Watch fatigue tracking and resolved critical sync issues. Due to a complete absence of user reviews in the post-release period, the impact on sentiment and ratings remains neutral. The update is currently data-deficient.

Apple Watch: there is new 'fatigue bar' feature. It allows you to see how your body reacts to the stress of climbing and see when you are ready for a next send.

iPhone: the Fatigue Curve is now plotted against time in the session rather than attempt number, so it matches the per-minute figure beneath it, and the Recovery Analysis card names your fatigue rate in words as well as colour.

Fixed: in rare cases a session recorded on Apple Watch could be lost on its way to your iPhone, along with its heart-rate timeline. Deleting a climb no longer leaves a false "not synced" warning in your Logbook.