AI coding agents, tested on real iOS code
Guides from a working iOS engineer: Claude Code workflows, agent setup, Xcode automation, and the tools I build along the way. Real configs and real commands, plus what broke.
Jerry PM, iOS engineer. Writing about Swift since 2018, 3.7K followers on Medium.
Latest articles
Guides and notes published here on JRDevHub, newest first.
FlashProve Can Prove Which Model Answered You. What Its YES Doesn't Cover
On November 2, Anthropic's Frontier Red Team, working with cryptographers from EPFL and MIT among others, published FlashProve: an open-source prototype that lets a provider prove a specific model produced a reply w…
Read the article →
Did OpenAI's AI Really Solve Yang–Mills? What's Proven So Far
Short answer Not in the way the headlines suggest. As of November 10, 2026, OpenAI claims a proof that pure Yang–Mills theory exists in four dimensions. It does…
OpenAI Is Buying Pierre: What to Do If You Use Diffs, Trees or Code Storage
OpenAI said on November 4 that it will acquire Pierre Computer Company, the small team behind Code Storage and the open-source Diffs and Trees libraries. Nothi…
Ripple-65B vs Mistral Large 4: The Scores Don't Compare, So Test Both on Your Repo
Two open-weight coding models arrived six days apart, and both claim a Terminal-Bench lead. Mistral put the weights of Mistral Large 4 on Hugging Face on Octob…
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Digital products
Each one started in my own workflow. Instant download, no subscription.
Claude Code + Xcode: The Production iOS Workflow Kit
CLAUDE.md and AGENTS.md templates, six iOS workflow commands, ten specialist agents, optional hooks, and a runnable SwiftUI + UIKit sample app with tests.
Opus 5.5 Coding Workflow & Cost Kit
A small, practical system for Opus 5.5 coding sessions: what proves a change works, and what the next session should do.
Ship It Solo: The Claude Code Agent Team Kit
A pre-wired Claude Code agent team: spec-writer → implementer → reviewer → QA, built on subagents, slash commands, and hooks.
The Coding Agent Lab: Free, Max & Ultra
My working agent configurations, open to everyone. Start here and see how I build before you buy anything.
Figma to Code: Local .fig to HTML Chrome Extension
Drop a local .fig file in the browser and get readable HTML back. No plugin, no Figma API key; the file stays on your machine.
The AI Product Builder's Skill Stack
The skills, file layouts, and agent instructions I use to take a product from idea to shipped with Claude.
Search Visibility Lab (SEO + GEO + AEO)
A guide and workbook for getting a product found in search and in AI answers. Also sold on Etsy.
The Expert Prompt Lab: Max Bundle
Every prompt lab I have shipped, in one download. Cheaper than buying two of them separately.
Python Automation Scripts Pack
100 small scripts freelancers bill for: file wrangling, scraping, reports, cleanup. Run them as-is.
Hi, I'm Jerry PM
I am an iOS engineer and I have written about Swift and Xcode here since 2018. These days most of my writing is about Claude Code and AI coding agents: how to configure them, where they help on a real iOS codebase, and where they fail. Guides on this site show the actual configs and commands. When something was not tested, the article says so. Between shipping apps I build small products (agent kits, a Figma-to-HTML extension, templates) and sell them on Gumroad and Etsy.
New guides by email
One short email when a tested guide or tool ships. No drip sequence.
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