Robert Petras

Articles about Design and Code

Become a Better App Developer and Designer

We provide comprehensive coverage of iOS development, encompassing Swift and SwiftUI, app architecture, performance optimization, and Apple’s ever-evolving ecosystem. This resource is ideal for developers aspiring to create visually appealing, contemporary, and efficient apps, adhering to Apple’s design philosophy.

From Autocomplete to AI Agents: What Agentic Coding in Xcode Really Means

Robert Petras
Apple Intelligence

Discover what Agentic Coding in Xcode is and how AI agents are transforming iOS development with faster features, smarter refactoring, and on-device intelligence.

Unlocking the Future of Development: Agentic Coding in Xcode

Robert Petras
Apple Intelligence

Apple is integrating Anthropic’s Claude and OpenAI’s Codex AI-powered coding agents directly into Xcode, allowing developers to utilize these agents for app development.

SwiftUI for Beginners: A Comprehensive Guide

Robert Petras
SwiftUI

Learn SwiftUI from scratch with this beginner-friendly guide covering views, layouts, state, and best practices for building modern Apple apps.

Practical Guide to iOS App Store Icon Design

Robert Petras
UI/UX Design

Designing iOS App Store icons is a UX challenge, not just branding. This guide shows how to create icons that feel native to Apple’s ecosystem, covering simplicity, color, accessibility, common mistakes, and how to use Apple’s Icon Composer.

Simple Prompting in Foundation Models framework

On-Device AI Shift: Simple Prompting

Robert Petras
Foundation Models

Integrate Apple’s Foundation Models in the latest iOS. Run private, on-device AI in SwiftUI with zero costs and complete user privacy.

SwiftData: Beginner’s Guide to Modern Data Persistence

Robert Petras
SwiftData

SwiftData is Apple’s modern data persistence framework that makes storing, fetching, and syncing app data simple, Swift-first, and beginner-friendly.

Introduction to Apple’s Foundation Models for Developers

Robert Petras
Foundation Models

This guide explains what Foundation Models are, how they work, how they differ from Core ML, and when to use them to build smarter, more native Apple apps without machine learning expertise.

SwiftUI AsyncImage: Loading Images the Modern Way

Robert Petras
SwiftUI

Load remote images the modern SwiftUI way. Learn AsyncImage basics, placeholders, phases, scaling, and animations—no third-party libraries required.

BUILD BETTER APPLE APPS

Modern Apple development, explained. SwiftUI, Apple Intelligence, app development, and UI/UX — clear insights, no fluff.