Explore 694 articles on iOS performance
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Tinder ships their iOS app to 190+ countries in 50+ languages. That localization overhead was costing them 51MB of install size.
Square just launched their Mobile Payments SDK to GA with a twist: your phone becomes the card reader. No external hardware required for contactless payments.
Profiling React Native apps just got a serious upgrade. Tracy, the real-time profiler that game developers swear by, now works seamlessly with React Native's native layer.
Your key metric just tanked 20%. Was it a code change? An OS update? A data pipeline bug? Pinterest built a platform to answer this question at scale.
Duolingo's QA team cut manual regression testing by 70% using AI. Here's how they made it work at scale.
Very Good Ventures makes the case for Flutter with data that's hard to ignore: 93% developer satisfaction and 24% user growth in a single year. If you're evaluating cross-platform frameworks, this breakdown cut...
Owen Voorhees from Apple just dropped a bombshell: the build engine that powers millions of App Store apps is now open source. This changes everything for Swift developers working across platforms.
Yağız Gürgül from Wise Engineering reveals how they shipped interactive 3D animations in their mobile app—and crushed a 324 MB asset bundle down to just 3.7 MB. The secret? A clever web-based approach that deli...
React Native 0.77 just dropped with over 1,061 commits from 161 contributors. The team is bringing web-standard CSS properties to mobile and making a bold move to Swift for iOS templates.
Swift vs React Native: the debate that never dies. But what does the data actually show?
Merpay just migrated hundreds of payment screens to modern UI frameworks while keeping their app running in production. Here's how they managed a 2-year engineering transformation.
Meta's Threads hit 100M users in 5 days, then scaled to 300M monthly users. How did the iOS team keep performance from collapsing under hypergrowth?
Duolingo's engineers were stuck waiting 50 minutes for every CI build. That's hundreds of hours wasted every week across the team.
Coinbase cut network requests by 64% during traffic spikes without degrading user experience. Here's how they engineered their way to massive scale.
Apple's Swift Testing framework is here, and Mercari's iOS team thinks it's a game-changer. If you're still on XCTest, here's what you're missing.
Lyft's iOS team built an Apple Maps extension that lets users book rides without leaving Maps. But the initial version added 45MB to their app—nearly a quarter of Apple's 200MB cellular download limit.
Upgrading React Native in a brownfield app isn't just harder than a greenfield project. It's a completely different beast that most teams underestimate.
Discord wanted to measure Voice Messages impact, but A/B testing would break the feature. Network effects meant users in control groups couldn't receive voice messages from treatment users.
Callstack reveals how to add React Native to existing native apps without a full rewrite. This brownfield approach is changing how engineering teams think about cross-platform development.
Grab's SDK was taking 4 minutes to initialize with 400MB of config data. That's a cold start problem that kills autoscaling.