Xcode Instruments can be confusing - Antoine van der Lee has built a new Mac app that makes performance improvements much easier to find & implement. Grab RocketTrace: rockettrace.app 0:00 Intro 1:43 The problem with Instruments 4:17 Why not just ask your agent? 7:00 Trained on real-world traces 7:35 Symbols & profile builds 10:38 Simulator vs. physical device 11:11 Reading the overview 13:19 Fixing issues with your agent 14:28 Focus with signposts 16:00 Coding by hand? 17:19 What's next: agents in the loop 19:51 Where to get RocketTrace Credits RocketTrace screenshots & benchmark data: rockettrace.app RocketSim images: rocketsim.app (used with permission) Footage: Antoine van der Lee on YouTube [links to his two videos] Apple WWDC23 "Analyze hangs with Instruments" · WWDC25 "Optimize SwiftUI performance with Instruments" Photo: iPhone 4 by Taylor Shomaker (public domain), via Wikimedia Commons Stock footage: Mixkit (Joshua Janssen, Mario Arvizu) Music: "Lo-Fi 04" by Lily J and "Your Breath" by Eugenio Mininni (Mixkit) Sound effects: Mixkit Tools I use daily (affiliate links) 🔭 Astro for ASO: https://flowritesco.de/astro 🔬 Get Reports about your apps: https://appfigures.com/r/5by3g 🚀 Ship apps faster: https://launchbuddy.app If you have any video suggestions please feel free to let me know by a comment. Get in contact via X: https://x.com/FloWritesCode