iOS
Articles on iOS performance, Swift optimization, Xcode tooling, and building fast Apple platform apps.
iOS engineering articles 421–450 of 733
Designing the Swiggy App to Be Truly Accessible (Episode 1)
Swiggy ignored accessibility for years, effectively locking out millions of users with disabilities. A Change.org petition changed everything.
Microapps architecture in Swift. SPM basics.
Majid Jabrayilov explores how to break down monolithic iOS apps into modular microapps using Swift Package Manager. The secret? Treating features as independent products that can be developed and tested in isol...
Stabilize, Modularize, Modernize: Scaling Slack's Mobile Codebases
Tracy Stampfli and Bryan Stern reveal how Slack's mobile teams tackled crippling tech debt that was actively slowing product roadmaps. Their solution? A bold 6-month stabilization sprint that transformed both i...
How we ship GitHub Mobile every week
GitHub Mobile ships to production every single week with a tiny team. Their secret? Ruthless automation that turns a multi-day release process into a Saturday morning workflow.
Flutter Revitalized Our Codebase and Transformed Our Engineering Team
Sam Moore from Betterment shares how his team rewrote 85% of their mobile app in just over a year without disrupting users. The secret? A methodical approach to adopting Flutter that prioritized team buy-in ove...
Introducing Swift RunOnce
Daniel Roth from Thumbtack's iOS team just solved a problem every Swift developer has faced: ensuring code runs exactly once without the brittle boolean flags that break at scale.
Balancing Native and JavaScript Code in React Native
React Native's bridge can be your bottleneck or your superpower. Callstack explores the critical tradeoff between JavaScript flexibility and native performance that determines whether your app flies or crawls.
Cross-Platform Messaging Experience
Snap rewrote their entire messaging system in C++ to solve a problem that plagues most mobile teams: platform inconsistency causing bugs and doubled engineering effort.
How We Revamped Tokopedia Play for iOS: So Fast & Productive
Tokopedia's iOS team rewrote their entire live streaming chat feature from scratch in record time. The reason? React Native couldn't handle the load during major promotions.
Airbnb's Page Performance Score on iOS
Airbnb built a unified performance scoring system that works across all platforms. Here's how they instrumented it on iOS to track real user experience at scale.
Continuous Integration and Delivery for iOS
Jimmy Harijanto from Blibli.com shows how to stop manually building iOS releases in Xcode. His team automated the entire pipeline from code commit to TestFlight using open-source tools.
Nextdoor Notifications: Using ML to Keep Neighbors Informed
Karthik Jayasurya from Nextdoor reveals how they transformed notifications from random spam into personalized updates that neighbors actually want. The result? A 40% jump in engagement without sending more mess...
Building App Clips with React Native
Sebastian Ekström from Shopify built something that shouldn't exist: a React Native App Clip under 10MB. The Shop app itself is 51MB, and React Native isn't exactly known for being lightweight.
Mobile Developer Productivity at Reddit
Reddit's mobile team ships features 30% faster after overhauling their developer productivity infrastructure. Here's how they did it.
Creating Airbnb's Page Performance Score
Airbnb ditched single-metric performance tracking and built something better. Here's how they unified web, iOS, and Android performance into one 0-100 score.
Introducing XCRemoteCache: The iOS Remote Caching Tool that Cut Our Clean Build Times by 70%
Spotify just open-sourced the tool that slashed their iOS build times by 70%. For teams drowning in long compile times, this is a game-changer.
Monitoring Performance of Screens in Your iOS App
Revolut's iOS team was drowning in vague performance reports. "This screen is laggy" became a detective hunt through Xcode Profiler with no clear starting point.
How Tokopedia Achieved 1000% Faster iOS Build Time
Tokopedia's iOS team turned 90-minute builds into 5 minutes. Yes, you read that right: a 1000% improvement.
Beyond Mobile First: Modern Mobile Development Strategy
Ryan O'Neill from Square reveals why 9 out of 10 mobile shoppers think their experience could be better. His team's solution? Stop thinking mobile-first and start thinking app-first.
Introducing Swift Distributed Actors
Swift is taking on distributed systems with the same elegance it brought to concurrency. The Swift team just open-sourced a complete cluster library for building distributed actor systems.
Mobile Performance @ Lyft
Lyft was serving 17.1M riders while their Android app launched 15-20% slower than competitors. Time to fix that.
How Do We Improve Our Most Important Page on iOS App
Tokopedia's homepage was crashing on millions of iOS devices. The culprit? React Native couldn't keep up with their scale.
Swift DocC Documentation Tool
Franklin Schrans from Apple's Swift-DocC team just announced something iOS developers have been waiting for: Swift-DocC is now open source and cross-platform. Documentation just got a serious upgrade.
What if iOS Developers Want To Learn Flutter?
Amorn Apichattanakul, an iOS developer since the iPhone 3GS era, spent 1.8 years mastering Flutter and wishes someone had created a cheat sheet for the transition. So he built one himself.
Designing for Productivity in a Large-Scale iOS Application
Airbnb's iOS codebase hit 1.5M lines of code with 75 engineers shipping weekly. Xcode was literally overheating their laptops.
A Importância da Performance Para Apps Mobile
Victor Oliveira from Mercado Libre reveals a harsh truth: 53% of users uninstall apps due to performance issues. With 4.5 billion active Android and iOS devices worldwide, each performing differently, mobile pe...
Open Sourcing Thumbprint Native Design System
Mallika Potter and Kevin Beaulieu from Thumbtack reveal how they open-sourced their entire native design system—and the surprising technical challenges they had to solve first.
Designing Resilient Systems Beyond Retries (Part 1: Rate Limiting)
Grab's engineering team learned the hard way: retries and circuit breakers aren't enough when you're running hundreds of microservices at scale.
Swift Code Linting and Formatting Best Practices
Cecília Saraiva from Glovo reveals how their 30+ iOS engineers maintain code consistency without the manual overhead. Spoiler: automation is doing the heavy lifting.
Swift 5.5 Released
Ted Kremenek from Apple's Swift Core Team just dropped Swift 5.5, and it's the biggest language update in years. This release fundamentally changes how iOS developers write concurrent code.