Antoine van der Lee

I write about Swift and iOS development on SwiftLee and build tools for developers and iPhone users. This page lists my apps, courses and writing.

Apps for developers

• RocketSim: the iOS Simulator companion for developers and AI coding agents.
• RocketTrace: guided analysis of macOS, iOS and iPadOS Instruments traces.
• MCP Beast: one gateway between your AI tools and every MCP server.

Apps for everyone

• Video Compressor: an iPhone app that shrinks videos on-device, so nothing is uploaded.
• Stock Analyzer: A to E scores for 30,000+ stocks and ETFs, based on fundamental analysis.

Courses

• AI Fundamentals: a tool-agnostic agentic coding course for developers.
• Swift Concurrency Course: a deep dive into Swift Concurrency.

Writing

• SwiftLee: a weekly blog about Swift, SwiftUI and Xcode.
• SwiftLee Weekly: a weekly newsletter with curated Swift articles.

Open source

My open-source work is on GitHub.