Pulse Notch streams live heart rate from WHOOP 5.0 over Bluetooth and places it around the MacBook camera cutout. Expand it for a rolling one-hour timeline, personal sustained-threshold cues, snooze, and a guided 60-second reset. It runs locally with no login, analytics, server, or cloud sync. Built for Apple silicon Macs on macOS 13+. The current release is ad-hoc signed and requires a one-time Open Anyway approval.