Give your simulator superpowers

RocketSim: An Essential Developer Tool
as recommended by Apple

Swift Testing Agent Skill: Write high quality tests with AI

Swift Testing is the standard for writing tests in Swift, but it's not always applied correctly in agentic development. I've felt the pain myself while working more and more with agents, and decided to convert all my Swift Testing articles into a new agent skill. I also looked up latest ...
AI DevelopmentSwift Testing

Core Data Agent Skill: Now available open-source

A Core Data Agent Skill for those who still write a lot of old-fashioned Core Data. While we can use SwiftData, my experience is that many projects still rely on the older framework. I'm one of those and have extensive knowledge on this framework, and even gave a talk on ...
AI DevelopmentCore Data

SwiftUI Agent Skill: Build better views with AI

A SwiftUI Agent Skill that helps you build better views or refactor existing ones. It's the reality we're in today, and I honestly can't live without it anymore myself. Several skills helped me improve the code quality produced by agents, and I'm happy to introduce you to a new open-source ...
AI DevelopmentSwiftUI

AI App Development: What I Learned in One Month

It was December 2025 when I started focusing on AI App Development. I started a new YouTube series, From App Idea to 10K MRR, found an app idea, and started building. While I used AI tools for a while, this was the first time I started using it for a ...
AI Development

11 Things I learned after using AI Agents full-time

AI agents are my biggest friends these days. I'm even making jokes to my wife, saying that Arie and Ingrid (AI) are doing my work while we're having lunch. I've been developing apps since 2009, but I can't remember changing my workflow so much as in the past months after ...
AI Development

Agent Skills explained: Replacing AGENTS.md with reusable AI knowledge

Agent Skills solves a common problem I have with AGENTS.md files across my projects. Every project that I'm working on has its own AGENTS file. Whenever I encounter an invalid AI output, I try to update my AGENTS file to prevent it from happening again. This mostly meant documenting coding ...
AI DevelopmentConcurrency

Icon Composer: Transforming an AI-generated icon

Icon Composer is Apple's recommended tool for generating app icons for all the latest OS versions. It's bundled with Xcode and lets you apply glass effects and a composition that aligns with the newest design. While working on my app for the From App Idea to 10K MRR YouTube Series, ...
AI DevelopmentWorkflow