Antoine van der Lee — iOS developer, tech lead, and creator of SwiftLee, helping developers grow their Swift skills, build successful side projects, and advance their careers through in-depth tutorials, podcasts, and mentorship.
18 articles from this blog
A developer shares predictions and wishes for WWDC 2026, focusing on AI-driven development, Xcode improvements, and iOS tooling.
Guide on using Xcode Instruments to optimize Swift Concurrency code, covering templates, instruments, and performance analysis.
Learn how to record physical iPhone app preview videos with device bezels using RocketSim for App Store marketing.
Optimizing AI agents for Xcode Simulator automation using RocketSim CLI, reducing tokens and improving speed.
Explores unexpected suspension points in Swift Concurrency that can impact app performance, with a focus on main-thread usage.
Explains Swift Concurrency's immediate tasks (Task.immediate) for performance-sensitive code, avoiding scheduling delays.
Guide to optimizing network requests in iOS apps using Xcode Simulator, proxies, and AI agents for better performance.
RocketSim 15 adds VoiceOver Navigator and post-editor for Xcode simulator recordings, boosting iOS developer productivity.
Guide to optimizing Xcode build performance using new Agent Skills, covering clean/incremental builds and caching.
Explores the 'One More Prompt' risk in agentic coding, where developers over-scope features by continuously prompting AI agents, leading to massive pull requests.
Explores the mental challenges and best practices for managing multiple AI agent-driven software development projects simultaneously.
A framework to help developers evaluate and choose the right AI Agent Skills for their projects, avoiding conflicts and ensuring quality.
A developer shares key lessons from one month of AI-powered app development, focusing on the pitfalls of speed and the importance of maintaining control and code quality.
A developer shares key lessons from using AI agents full-time, focusing on workflow improvements, prompt strategies, and productivity gains in software development.
Introduces Agent Skills, an open format for sharing reusable AI knowledge across projects, replacing project-specific AGENTS.md files.
A Swift developer reflects on their first full year as an indie developer, covering milestones, project growth, and launching a Swift Concurrency course.
A developer shares essential Xcode project configuration changes to prevent technical debt and improve Swift concurrency safety from day one.
Explains iOS/macOS 26+ concurrency-safe notifications using MainActorMessage & AsyncMessage protocols to replace standard Notification Center.
