Before money moves, check with us: scam protection the family runs
This is a submission for the MLH x DEV Writing Challenge Every scam script has the same line in it: "Don't tell your family." So we built the opposi…
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Deep‑link crashes in Expo Router when the app hits real traffic
The situation You are a mobile lead on a React Native product that just shipped version 2.4 with Expo Router 2.1.0. The release added a “share‑to‑ap…
Migrating a React Native app to the new EAS build and OTA workflow without a release freeze
The situation You are the lead mobile engineer on a React Native app that ships to 150 000 active iOS and Android users. The app currently uses the…
Easy Full Stack Authentication and Login in the Style of Spring
Three requests leave your app just as its access token expires. If each refreshes independently, the first exchange can invalidate the refresh token…
I built the running coach that actually listens to your body
This is a submission for the Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle What I Built I run with Nike Run Club. It tracks every run w…
Android on iOS, Web & Desktop Efficiently and for Free
We are not the first to bring Android to iOS. Earlier projects brought Android's runtime along with the application. Dalvik was built for Android, i…
XPath to iOS Class Chain: can Claude do it instead of a converter?
TL;DR No model beat the converter. The best Claude run reached 96.7 % of the converter's usable chains on 676 locators and was ahead of it on none.…
XCUI, Tests & Robots. Разбираем нативную автоматизацию iOS на винтики. Часть 2
Привет, Хабр! На связи снова Максим из ATI.SU . В первой части цикла мы разложили нативную автоматизацию iOS на винтики: разобрались, какое место UI…
How to test an iPhone screen translator without confusing OCR failures with translation failures
Disclosure: I’m the maker of Onscreen Translate, which is referenced below. This article was prepared with AI assistance. The test plan is a propose…
What Apple actually checks: an App Store submission checklist for a health app
Most App Store submission checklists are flat lists. They tell you what has to be true, in roughly the order Apple numbers its guidelines, which is…
Grow a Song: my run wrote its own soundtrack, with Gemma running on my phone
This is a submission for the Hacktoberfest Open-Source AI Challenge, Week 1: Touch Grass . What I Built On Friday morning I went for a 35 minute run…
HealthKit to JSONL vs JSON: one snapshot survives a cut sync, the other gives you nothing
Two apps can write the exact same Apple Health records to disk and behave nothing alike the moment a sync gets interrupted. I benchmarked it on 2026…
Native Desktop Themes for Production Apps
A desktop app needs more than larger versions of its phone controls. Dialogs need their own windows. Title bars, scrollbars, and keyboard focus need…
I Vibe Coded My First iOS App With AI — Here’s What I Learned
Hi! I’m Nika, I’m 22, and a few months ago I decided to build my first iOS app. I wanted to make something I would genuinely use myself, publish it…
Native incoming calls in React Native: CallKit on iOS, full-screen calls on Android
From the Streaming CDN team. The original, kept up to date, is at streaming-cdn.ewin888.com/guides/react-native-incoming-call-screen . A calling app…
How iPhone's Secure Enclave Stops Brute-Force Attacks
TL;DR: Your iPhone protects your 6-digit passcode by combining hardware-bound cryptography with forced validation delays. The Secure Enclave enforce…
In iOS 27 and Xcode 27 Liquid Glass will be applied to your app automatically.
By Robin Winters · First published June 30, 2026 · Republished October 2, 2026 Original LinkedIn edition · Readable HTML edition · Robin’s portfolio…
Fitness event feeds: explicit dates, stable identity and visible conflicts
Robin Winters · October 2, 2026 · robin.ac A map can look polished while the events behind it are ambiguous. Two feeds may repeat a record, supply d…
Swift search: cancellation needs an ownership check
Robin Winters · October 2, 2026 · Educational example prepared with coding-assistant support Search often looks simple until two requests finish in…
How I Structured My First KMP App: Modules, Layers and Source Sets
A walkthrough of the modules, source sets and Gradle setup behind a Kotlin Multiplatform app on Google Play. Part 2 of “Building an Exam Prep App wi…
Apple Mocked Foldables for Black Bars. Its Own iPhone Duo Has the Same One.
Apple spent years mocking Android foldables for wasting screen space on video. Its own iPhone Duo just shipped with the identical problem: run a sta…
One Java Model from the App to PostgreSQL
The annoying part of full stack development is finding the same rule in three places. The app checks a field, the server checks it slightly differen…
Почему спидтест говорит «всё хорошо», а игра лагает: как я построил Latency Dashboard и научил пинг не врать
Спидтест показывает 200 мегабит, а в PUBG Mobile 180 мс — и оба числа правда. Пропускная способность и задержка измеряют разные вещи, и про вторую с…
React Native Environment Setup: Managing Dev, Prod, and Staging Builds with Android Flavors and iOS Schemes
During my React Native development journey, I faced several issues managing dev and prod environments — API URLs, Firebase configuration, Android fl…
Agents Shouldn't Blink
Field notes · simframe · iOS Simulator The observation What I noticed watching Claude test my app I had asked Claude Code to check a fix on the iOS…
Lies, Damn Lies and Benchmarks
There's an old joke about three kinds of lies: lies, damn lies, and benchmarks . Codename One did very well in our benchmarks. But were they accurat…
Keep On-Device Transcripts Out of Phone Backup on Your First Mobile AI PR
You sit down with a fresh clone and a first ticket that sounds harmless on Slack. The ticket asks you to persist the last voice session so offline r…
AI‑агент вместо ручного регресса: архитектура, метрики, инсайты
Привет, Хабр! На связи Владимир Бойко, ведущий iOS‑разработчик в Т‑Банке. В статье расскажу, как мы построили AI‑QA‑агента, кото…
Getting started with iOS VoiceOver: a beginner's guide
VoiceOver is the screen reader built into every iPhone and iPad. If you build, design, or test anything that runs on an iPhone, you should know how…
A Dialog Can Now Be a Native Desktop Window
Last week's native-window release could open an editor, inspector, and tool palette as separate operating-system windows. Then an ordinary Dialog.sh…