Architecture

Shipping an Expo app to the App Store: the landmines nobody warns you about

I recently shipped Add to Calendar: AI Events — an iOS app that turns screenshots and text into calendar events — built with Expo SDK 52 and React Nat…

Building AIAnalyzer: A Swift Static Analysis Tool That Knows When to Trust Its Own AI

I've spent 18 years shipping iOS apps — enterprise VoIP, automotive, retail — and one problem kept resurfacing regardless of the domain: codebases qui…

Port Support You Can Trace Back to a Green Test

“Supported on iOS, Android, desktop, and web” sounds useful until you need one method on one target. Does WebSocket work on watchOS? Which Linux archi…

VS Code & Codespaces iPadOS

I love traveling light with just an iPad Pro and a Magic Keyboard. The M-series hardware is insanely fast, battery life is great, and the display is g…

Building the AI Fallback Ladder Behind LOCK TF IN (an app that roasts you into working out)

I just shipped my first solo iOS app: LOCK TF IN — a fitness accountability app where an AI drill sergeant roasts you when you skip a workout. Log a s…

Podcast Apps: A Framework for Dying Slowly with Dignity

Independent podcast apps are not growing as a category. This is not a particular secret, but perhaps you haven’t seen it stated explicitly. It’s the s…

Error Analysis

To learn how to analyze an error, we are going to use the error below as an example: nx run mobile : android ✔ 7 / 7 dependent project tasks succeeded…

How We Beat HotSpot Performance (By Cheating, But Not Like That)

No, we didn't cheat in the benchmark. At least I hope we didn't. Every optimization in this story was gated on bit identical output checksums against …

Esp-Monitor: архитектура и развертывание self-hosted IoT-платформы для микроконтроллеров ESP

Одним из самых вдохновляющих моментов в разработке микроконтроллерных устройств является их первая установка и запуск в локальной сети. И этот же моме…

Why I Still Test In Safari First (And The Bugs It Catches Early)

Yes, I Still Open Safari First I build and test new frontend work in Safari first. On purpose. Repeatedly. Sober. I know that sounds backwards. Everyo…

Apple TV And Android TV: One Codebase, And CSS @media For The Living Room

This is the Tuesday follow-up to Friday's funding open source without the bait and switch , and it picks up right where last week's Apple Watch port l…

"Swipe Cleaner: A Technical Deep Dive into On-Device Photo Privacy"

Disclosure: I write about projects in the OpenNomos ecosystem, including Swipe Cleaner. The Problem With Photo Cleaners Most photo cleaning apps have …

Privacy Isn't a Checkbox — It's Architecture

Privacy isn't a checkbox. It's not a statement in your terms of service. It's not a toggle in your settings app. Privacy is architecture. And most app…

Designing Hybrid Edge AI Systems for Low-Latency Intent Classification in Mobile Applications

A Hybrid Edge–Cloud Architecture for Low-Latency Intent Classification in Mobile Applications Abstract Large Language Models (LLMs) have fundamentally…

Things I Wish Someone Had Told Me Before Starting iOS Development

When I started learning iOS development, I thought the hardest part would be writing Swift code. I was wrong. The real challenges had very little to d…

Questions to Ask a Mobile Dev Partner About Store Accounts, Release CI, and Handover

A question list for founders and tech leads before the contract is signed. The proposal lists features, design, and a twelve-week timeline. It says "A…

Game Builder Tutorial 1: Build a 2D Platformer — Duke's Coffee Run

Most game tutorials make you hand-place every sprite in code. The Game Builder flips that around: you draw the level visually, tag objects with the nu…

iOS Compiler Independent of Xcode: Detailed Explanation of the kxbuild Tool in kxapp

In iOS development, compilation is rarely discussed. Most of the time, after writing code, you click Run, and the IDE handles the rest. But if you bre…

I built one iOS app that controls four different Hisense smart-TV platforms — here's how each protocol works

The problem My Hisense remote died last year and I went down a small rabbit hole trying to find a single iOS app that worked across all the Hisense sm…

Lazy Loading Dynamic Libraries and the Plugin-Architecture on iOS

Java To Native Linux App: One 5MB Binary, x64 And Arm

Yesterday's release post introduced the new native Linux desktop port. This post is the detailed version: what it is, why the hard parts were hard, an…

How I auto-generate 800+ App Store screenshots across 39 languages and 3 devices

App Store screenshots are the highest-leverage marketing asset an app has — and the most painful to maintain. Now multiply that pain by 39 languages a…

Native Linux, Apple Watch, A Game Builder And Crash Protection

This week brings a native Linux desktop port, an Apple Watch and Wear OS port, a visual Game Builder with a high-level gaming API, and a new crash-pro…

Converting RAW to HEIC inside Apple Photos: App Intents, HDR gain maps, and never losing a metadata field

I built an iOS/iPadOS/macOS app called RawToHEIC. The pitch is one sentence: you select RAW photos in the Photos app, tap Share, pick "Convert RAW to …

Forget the Cloud: Building a Privacy-First AI Health Coach with Llama-3 and MLC-LLM on Your iPhone

We live in an era where our most intimate data—heart rates, sleep cycles, and step counts—is constantly uploaded to the cloud for "analysis." But what…

How to Fetch Apple Calendar Events and Reminders in Flutter (macOS)

Building a macOS app with Flutter and need access to Apple Calendar events and Reminders? Flutter cannot directly access EventKit (Apple's framework f…

What's New in Apple's Foundation Models Framework at WWDC 2026

From a single on-device model to a hybrid, multimodal, agentic AI platform — and it's going open source When Apple shipped the Foundation Models frame…

I Built an Inbox Cleaner That's 88% Greener Than Cloud Alternatives. Here's How.

I had 50,000 emails in my inbox. Most cleaners wanted £8/month and my data. So I built my own. Here's why MailBroom runs entirely on your iPhone, why …

Room-Inspired Local Persistence in Swift: A Production GRDB Architecture

Introduction If you've built Android apps with Room, you already think in a layered persistence model: entities define your schema, DAOs handle querie…

We built a budgeting app that skips the bank login — here's the trade-off

Most budgeting apps open with the same onboarding step: connect your bank account. For a certain group of people, that's where the process ends — not …