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What is an AI Agent Phone?

An AI agent phone is a real, or cloud-hosted, smartphone that an LLM-powered agent can operate on its own. It sees the screen, taps, swipes, types,…

Every rejection becomes a check

Every app we ship gets reviewed by someone else's QA. Two someones, actually — Apple and Google — each with its own rulebook, and each rulebook come…

Making a vendor's closed-source binary SDK optional at build time

You have an app to ship, and it depends on a vendor's SDK. The vendor sends you a .xcframework for iOS and a bare .aar for Android, both prebuilt, b…

I hosted my no-Mac iOS pipeline as a browser wizard (and dropped the price to $1 for a day)

A while back I wrote about the GitHub Actions pipeline I built to ship Citolex to the App Store without ever owning a Mac. The pipeline itself hasn'…

I inspected my KMP iOS export header 61% of it was dead weight. Here’s what I found and built

If you are building an iOS app with Kotlin Multiplatform (KMP) or Compose Multiplatform, you might have opened your generated Shared.h header at som…

App store Submission : Rules and regulations every developer must know

Publishing an iOS app is more than uploading a build. Apple reviews your app for functionality, privacy, security, content, and usability. 1. Apple…

I Built NameSnap With Codex: Five Lessons About AI-Generated App Design

I built an app as an experiment with Codex's design capabilities. The app is called NameSnap Picker. It helps teachers, streamers, coaches, parties,…

I failed at time management five times. Then I audited where the time actually went.

I've promised myself I'd "manage my time better" more times than I can count. None of it lasted a month. Work harder. Cut the distractions. Stay foc…

App Hardening: One Obfuscation Pipeline Across Every Port

Obfuscating only the Android artifact is a poor security model for a cross-platform application. Codename One App Hardening transforms the merged ap…

I Was Manually Managing iOS Certificates — Then I Found Fastlane Match

Manual code signing works fine — right up until a second developer touches your project. Then Apple's certificate limits, silent revocations, and "i…

The Third-Generation GUI Builder: One Workspace for Every Form

We have rebuilt the Codename One GUI Builder again. This is its third generation. The interesting part is not another drag-and-drop surface. It is w…

The Hidden Reasons Your iOS App Feels Slow

An iOS app can feel slow even when its interface looks well-designed and responsive. The problem may not always be the UI or the code running on the…

I ship iOS apps to the App Store without owning a Mac, using GitHub Actions' free macOS runners

I don't own a Mac. When I built my last iOS app (Citolex, a speed reading app with a couple of native Swift plugins), I didn't want to buy one or pa…

I built an EV trip planner because a charger pin in an empty lot is a wasted stop

Most EV trip apps treat a charger as a destination. On a real drive, a charger with nothing around it is a wasted forty minutes. I wanted the stop t…

Swift ARC Doesn’t Scan the Heap — I Removed strong_release from SIL to Prove It

Also available: Korean version · Source code and reproducible experiments A source-to-runtime experiment with Swift 6.3.1: inspect ownership in SIL,…

История создания звонилки без номера: месяц, миллионы токенов и грабли, которые легли в основу этого цикла статей

В октябре прошлого года на Хабре вышла статья «Как я писал свою звонилку для видеозвонков» — автор под ником CEOCTO за несколько вечеров написал P2P…

Accessible by Platform: How iOS and Android Differ from the Web

The guidelines you know were written for web pages. Native apps borrow their intent and rewrite the mechanics. If your accessibility strategy assume…

Breaking Up Big SwiftUI Views the Right Way

Why computed properties help readability, what @ViewBuilder actually does, and when a separate View type matters Every SwiftUI codebase eventually g…

How Bluesky draws its logo on screenshots

Swift 6 Strict Concurrency: 4 Migration Mistakes and How to Fix Them

I enabled Swift 6 mode on a project I'd been shipping for two years. Sixty-plus errors. My first reaction was to roll it back. I'm glad I didn't. At…

Как мы научили XCUITest тапать в контролы на глубине 136 уровней вложенности

Привет! Меня зовут Даниил, я iOS-инженер в Циане. В этой статье расскажу, как мы заставили XCUITest работать с экраном, к которому он в принципе не…

JS-инъекция для iOS-тестов: как подружить WKWebView и XCTest

Мы хотели, чтобы iOS-тесты видели внутри WebView те же data-testid , что и фронтенд. Вроде бы простая задача. Но iOS устроена хитрее: WKWebView запу…

Why programmatic inserts don't wrap on iOS multiline TextInput, and the one-line native fix

Ran into this last week on a multiline TextInput and lost a chunk of a day to it. Writing it up in case someone else hits the same thing. The bug I'…

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Cloud-based AI has two persistent problems for mobile developers: latency, because every inference call is a round trip to a server, and privacy, be…

Why your App Tracking Transparency prompt doesn't show up (and how it got my app rejected)

App Review rejected my iOS app under Guideline 2.1. The note said reviewers were unable to locate the App Tracking Transparency permission request w…

The actual cost of shipping an iOS app in 2026

"How much does it cost to put an app on the App Store" gets answered inconsistently online because most answers either only count Apple's fee, or on…

GitHub Actions' free macOS minutes, explained

GitHub Actions is GitHub's built-in CI/CD system — it spins up a fresh virtual machine, runs whatever commands you tell it to, and tears the machine…

I set the font to the largest size and found the same bug eleven times

I was cleaning up the UI on a side-project iOS app and did one thing: set Dynamic Type to XXXL and screenshot every screen. Reading the code had tur…

Building Mathastic Twice: One Math Puzzle Game, Two Native Architectures

I recently released Mathastic , a fast-paced math puzzle game for iOS and Android. I’m Tapadyuti Chatterjee, a software engineer interested in distr…

The download button that silently did nothing on mobile

For about a year, the save button in my collage editor did nothing on phones. Not "threw an error." Not "downloaded a corrupted file." Nothing at al…