iOS
Articles on iOS performance, Swift optimization, Xcode tooling, and building fast Apple platform apps.
iOS engineering articles 121–150 of 733
Orchestrating our UI test suite with Maestro
Doist's Android team faced a brutal reality: their UI test suite was so flaky that only 50% of runs passed on the first try. PRs sat idle for hours waiting for reruns.
Going Universal: From a brownfield React Native and Next.js stack to one Expo app
Gunnar Torfi shares how a single developer maintained 40+ mobile screens AND a full web app by merging them into one universal codebase. No big rewrite required.
Enhancing HDR on Instagram for iOS With Dolby Vision
Chris Ellsworth, Cosmin Stejerean, and Hassene Tmar from Meta reveal how Instagram became the first Meta app to support Dolby Vision. The catch? Their initial A/B test showed people watched LESS video with the ...
Embedded Swift Improvements Coming in Swift 6.3
Swift is coming to microcontrollers, and the latest 6.3 release is making it production-ready. Embedded Swift now handles everything from memory-mapped I/O to proper debugging on resource-constrained hardware.
Enhancing HDR on Instagram for iOS with Dolby Vision
Chris Ellsworth, Cosmin Stejerean, and Hassene Tmar from Meta reveal how Instagram became the first Meta app to support Dolby Vision. The catch? Their initial A/B test showed people watched LESS video with the ...
What's New in Flutter 3.38
Kevin Chisholm from Google's Flutter team just dropped Flutter 3.38, and it's packed with the kind of productivity wins developers have been asking for. Dot shorthands alone will save you countless lines of boi...
Reverse Engineering iOS to Fix SDK Crashes
Phil Niedertscheider from Sentry reverse-engineered Apple's private frameworks after iPadOS 26 broke a fundamental assumption: that successful type casts guarantee the object is actually that type.
Grab’s Mac Cloud Exit supercharges macOS CI/CD
Grab moved 250+ Mac minis from a US cloud to a Malaysian data center. The results? 40% faster builds and $2.4M saved.
Scaling Mobile UI Testing with AI
Trendyol scaled from 4,869 to 10,400 UI tests in under a year — while keeping execution under one hour. Here's how AI became their test generation engine.
What's New in Swift October 2025
Joe Heck and Dave Lester just dropped the first edition of a new monthly Swift digest, and it's packed with signals that Swift is expanding way beyond iOS. Server-side Swift is heating up with performance gains...
I Tried to Reduce My App Size by 50%. Here's What Actually Worked
A 260 MB productivity app? One developer spent a week cutting it to 95 MB and learned most optimization advice is wrong.
Evolving Mercari's iOS codebase into a multi-product monorepo
Shingt from Mercari reveals how they transformed a single-product iOS codebase into a monorepo supporting multiple apps—without halting work for 50+ active engineers. The result? A 38.8MB binary despite 900+ mo...
Delivering Mobile App Updates Faster
Manoj Kumar Gubba from Mercari's iOS team reveals how they ship mobile updates in just 3-7 days. Most teams take 1-2 weeks, but Mercari's approach cuts that in half while maintaining stability.
How to add native code to your app with Expo Modules
Jacob Clausen from Expo shows how to break free from SDK limitations. Building custom native modules doesn't mean abandoning Expo's developer experience.
Advanced NavigationStack Patterns in SwiftUI
NavigationStack in SwiftUI works great until you're hunting through ten files to figure out why Settings opened the wrong screen. The coordinator pattern changes everything.
A Guide to Generating Swift Code with Swift Syntax and Swift OpenAPI (Part 2)
Esraa Eid from Deloitte UK tackles Swift code generation with a deep dive into SwiftSyntax and OpenAPI. If you've ever struggled with generating type-safe models from specs, this comparison will change how you ...
Kotlin Multiplatform Contest 2026
Students and recent grads: JetBrains is offering free trips to Munich for building Kotlin Multiplatform projects. The 2026 contest is open now, and the bar might be lower than you think.
Flutter for Enterprises: Everything CTOs and Engineering Leaders Need to Know
Very Good Ventures reveals why global leaders like Disney, Toyota, and BMW are ditching fragmented native development for a single framework. The shift isn't just technical—it's transformational.
React Native Version 0.82 Release
React Native just dropped its most significant release ever. Version 0.82 completely removes the Legacy Architecture, marking what the team calls 'the start of a new era' for mobile development.
A Guide to Generating Swift Code with Swift Mustache (Part 1)
Esraa Eid from Deloitte UK reveals how to make Swift code generate Swift code—no low-level languages required. She explores three powerful approaches to transform JSON schemas into production-ready Swift struct...
Introducing Swift Profile Recorder: Identifying Performance Bottlenecks in Production
Apple just open-sourced the profiling tool they've used for years to debug Swift services at massive scale. No special privileges, no eBPF, no system dependencies required.
Cross-Platform TV Apps with React Native for tvOS, Android TV, and Tizen
Callstack just dropped their Ultimate Guide to React Native TV Development 2026. If you're building streaming apps, this changes the game for cross-platform TV.
Accelerating Mobile App Development at Zalando with Rendering Engine and React Native
Zalando is migrating 90+ screens across iOS and Android to React Native without rebuilding their entire app. Here's how they're pulling it off for 52M+ customers.
How Uber Standardized Mobile Analytics for Cross-Platform Insights
Uber runs 50+ mobile apps across iOS and Android. How do you get consistent analytics when every team tracks things differently?
Scaling Swiggy's Mobile Ecosystem [1/n]
Tushar Tayal from Swiggy reveals the hidden complexity behind managing 6+ consumer apps (Snacc, Instamart, Toing, Dineout, Crew) in production. Spoiler: it's not just about shipping faster.
Compose Multiplatform 1.9.0 - Compose for Web Beta
Ekaterina Volodko and Alejandra Pedroza Marchena from JetBrains announce a game-changer: Compose Multiplatform for web just hit Beta, powered by Wasm. Your Android Compose skills now work in the browser with mi...
Swift 6.2 Released
Holly Borla from Apple's Swift Core Team just dropped Swift 6.2, and it's tackling the biggest pain point in modern development: making concurrent programming actually approachable. This isn't just another incr...
Understanding and Improving SwiftUI Performance
The article link appears to be broken or unavailable. This SwiftUI performance piece from Airbnb Engineering isn't loading, returning a 404 error instead.
Thumbtack's Journey to Swift 6
Scott Southerland from Thumbtack just shared what most iOS teams won't tell you: migrating to Swift 6 took 16+ months and broke their entire test suite. Here's the battle-tested playbook they wish they'd had.
React Native Version 0.81 Release
React Native 0.81 just dropped with a game-changing performance boost: iOS builds up to 10x faster. But there's a catch that'll affect every Android developer.