--- title: Xcode Instruments Time Profiler: Improve performance with AI description: A workflow for using Xcode Instruments' Time Profiler in combination with AI agents to iteratively optimize iOS app performance. Using a real-world case study,... canonical: https://daily.dev/posts/xcode-instruments-time-profiler-improve-performance-with-ai-yb6axeam6 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Xcode Instruments Time Profiler: Improve performance with AI | daily.dev og:description: A workflow for using Xcode Instruments' Time Profiler in combination with AI agents to iteratively optimize iOS app performance. Using a real-world case study,... og:url: https://daily.dev/posts/xcode-instruments-time-profiler-improve-performance-with-ai-yb6axeam6 og:image: https://api.daily.dev/og/posts/YB6aXEAM6.png og:image:alt: Xcode Instruments Time Profiler: Improve performance with AI og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Xcode Instruments Time Profiler: Improve performance with AI **[SwiftLee](https://daily.dev/sources/avanderlee)** · 7 min read · 0 upvotes · 0 comments ## Summary A workflow for using Xcode Instruments' Time Profiler in combination with AI agents to iteratively optimize iOS app performance. Using a real-world case study, accessibility element fetching was improved 25x (from ~12 seconds to ~485ms) across four optimization phases. The approach involves running the Time Profiler, copying signpost intervals and call tree data, then feeding that output as a structured prompt to an AI agent to plan the next round of improvements. Tips include adding a CLI to your app for isolated benchmarking, using Call Tree filters to reduce noise, and managing token usage by trimming profiler output. A dedicated RocketSim CLI command for automated performance tracing is also in development. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Agentic iOS Development with RocketSim and RocketTrace](https://daily.dev/posts/agentic-ios-development-with-rocketsim-and-rockettrace-xtxmxw28g) · SwiftLee · 0 upvotes · 1 comments - [Introducing RocketTrace: Using Xcode Instruments with AI Agents](https://daily.dev/posts/introducing-rockettrace-using-xcode-instruments-with-ai-agents-rms2og9s1) · SwiftLee · 1 upvotes · 0 comments - [How We Optimized Agent Device for Mobile App Automation](https://daily.dev/posts/how-we-optimized-agent-device-for-mobile-app-automation-creb13roy) · Callstack Blog · 1 upvotes · 0 comments - [Record, generate, run: AI-powered UI test generation for iOS](https://daily.dev/posts/record-generate-run-ai-powered-ui-test-generation-for-ios-5xjahb0pf) · Grab Tech Blog · 0 upvotes · 0 comments --- Tags: [#performance](https://daily.dev/tags/performance), [#ios](https://daily.dev/tags/ios), [#ai-agents](https://daily.dev/tags/ai-agents) [View this post on daily.dev](https://daily.dev/posts/xcode-instruments-time-profiler-improve-performance-with-ai-yb6axeam6) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Xcode Instruments Time Profiler: Improve performance with AI","url":"https://daily.dev/posts/xcode-instruments-time-profiler-improve-performance-with-ai-yb6axeam6","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/xcode-instruments-time-profiler-improve-performance-with-ai-yb6axeam6"},"datePublished":"2026-04-20T09:50:24.713Z","dateModified":"2026-04-20T09:50:53.988Z","description":"A workflow for using Xcode Instruments' Time Profiler in combination with AI agents to iteratively optimize iOS app performance. 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