Update to support the new Pulse for Mac app currently available in TestFlight for testing: https://testflight.apple.com/join/1jcanE3q. This new app replaced Pulse Pro. It was completely redesigned and has a ton of new features, including response mocking and many more.
Pulse for Mac supports earlier Pulse versions, but version 4.x is required to use the new features
Discussions thread for Pulse 4.0: #187