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Versioned Builds Are Back, With Master Builds For Fast Verification

Versioned builds are back. What is Codename One? Codename One is an open-source framework for building native iOS, Android, desktop, and web apps from…

Post-quantum signing keys that never leave the Secure Enclave

iOS 26 quietly added something I had been waiting for: the Secure Enclave can now hold ML-DSA keys. Not "the app does lattice math and stores a blob i…

How I export 1.2-gigapixel images on an iPhone without running out of memory

Rendering a big image on iOS is one of those things that looks trivial until your app gets killed by the OS mid-export. CGContext , draw, makeImage() …

Commerce And Secrets Without An IAP Tax

Commerce is the easiest feature in this release to misunderstand, so the first sentence has to be blunt: What is Codename One? Codename One is an open…

Motion, Stylus, Trackpads And Foldables In The Core

For a long time, mobile meant a touch screen and a few platform-specific escape hatches. That is no longer enough. A Codename One app can run on phone…

Use Xcode MCP Instead of xcodebuild to Save Disk Space and Time in Agentic iOS Development

TL;DR - When setting up an AI agent for iOS development, the default approach is to have the agent run headless xcodebuild commands. To save disk spac…

CarPlay And Android Auto From One Codename One API

Yesterday's release post was about the bigger business line we will not cross: no royalties on IAP, ads, commerce or app revenue. This post is about o…

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…

Introducing App Store Release Agent – Automating my App Store Pipeline

Publishing ten apps in four months sounds good. And it is good. It means the bottleneck is no longer building the app. With AI-assisted coding, small …

More Surfaces, Same Deal: Cars, Sensors, Commerce, Video And Builds

Last week's release post was about funding open source without the bait and switch. This week's release tests that idea again, because two of the new …

Bypassing Activation Lock via Device-to-Device Migration: A Retrospective Analysis

TL;DR: In June 2026, I encountered a real-world scenario where an iPhone 13 (iOS 18.6), fraudulently locked via a phishing attack, could be fully unlo…

iOS Location Spoofer: The Pros and Cons of Non-Jailbroken GPS Manipulation

The introduction of the iOS Location Spoofer, a standalone app capable of altering GPS locations on non-jailbroken iOS devices, has stirred conversati…

Testing In-App Chat and Customer Support Flows in Delivery Apps

The help button is the most important button in your delivery app that your QA team almost never clicks during regression. Every delivery app has an i…

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…

How screenshot detection works on iOS

Detecting a screenshot on iOS starts with a single UIKit notification. That is the last easy part. UIApplication.userDidTakeScreenshotNotification tel…

I was wrong about game development

The Popup That Says the Quiet Part Out Loud

Stop Rebuilding the Same SwiftUI Components: A Guide to DesignFoundation

"I'll just write a quick button style... and a text field with validation... and a card component..." Two weeks later you have a bespoke design system…

Stop Rebuilding Auth, Onboarding, and Dashboards: DesignFoundationPro

Part 2 of 2. This tutorial builds on Part 1 — DesignFoundation core . If you haven't added the base package and theme yet, start there. The core packa…

Turning a Chinese IoT camera into an owl livestream

"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 …

How AI Is Changing the Way We Manage Photos on Mobile

Your phone camera roll is a data problem dressed as a UX problem. The average iPhone user has over 5,000 photos. Most of them are never looked at agai…

Overnight mobile sensing without murdering the battery: field-tested tactics

Battery is the silent killer of always-on mobile sensing. If your app records or samples through the whole night, you are one bad release away from a …

A Privacy-First Analytics API: One Facade, A Provider SPI, And A Consent Gate

On Friday I wrote about funding open source without the bait and switch , and the analytics API in PR #5266 is the clearest example of the model in th…

Rich Text And Code Editing: RichTextArea And A Syntax-Highlighting CodeEditor

Friday's post covered how we fund this work without the bait-and-switch; today is the engineering side of the same week, with two new visual editors. …

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…

Maps You Control: A Pure-Vector MapView And Pluggable Native Providers

Yesterday's funding post covered the model behind this week's releases. Here is the first one. PR #5264 brings mapping back into core with two compone…

Swift Structs — Static Properties and Methods 🏛️

Sometimes you want data or functionality to belong to a struct itself, not to any individual instance. That's what static properties and methods are f…

Building an AI-Powered Photo Cleaner: Lessons from the App Store

Last year my iPhone popped the dreaded "Storage Full" notification for the hundredth time. I checked the breakdown: 68% was photos. Not memories — jun…