Why is expo-router so slow on Android (production)
I’ve tested this on blank screens and delay between switching them is almost the same. I’ve tried to optimize code with memoization usecallbacks etc. But it didn’t change
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Understanding and Improving SwiftUI Performance
New techniques we’re using at Airbnb to improve and maintain performance of SwiftUI features at scale
How We Slashed Android Startup Time by 30% with Baseline Profiles
Nobody likes waiting, especially when opening an app. We noticed a clear trend: the faster our app started, the more users stuck around.
How Dropbox leverages testing to maintain high level of trust at scale
With more than one billion downloads, the Dropbox app for Android has to maintain a high quality bar for a diverse set of use cases and users. With less than 30 Android engineers, manual testing and #yolo isn’t enough
Mobile Bridge: Making WebViews Feel Native
Learn how we tackled the main issues of traditional WebViews—performance, appearance, and integration—and how Mobile Bridge became a game-changer in our mobile development strategy, even allowing us to accelerate the migration to React Native.
How to Reduce Android Studio Memory Usage
Android Studio is a powerful IDE, but it can be memory-hungry. A few tweaks can significantly improve performance and reduce excessive memory usage. Here I will maintain the original tips structure while diving deeper into why each optimization works and how to apply it.
Netflix App Testing At Scale
Testing at Netflix continuously evolves. In order to fully understand where it’s going and why it’s in its current state, it’s also important to understand the historical context of where it has been.
React Native vs Flutter in 2025?
I am now building a mobile app, and checking what is the better platform for building a cross platform (iOS, Android, Web) in 2025 - React Native or Flutter? I am especially interested in the tooling itself regarding ease of building, uploading to the app stores, etc?
Make WebViews edge-to-edge in Android
Ensure your WebViews are compatible with Android 16, as Android 16 removes the ability to opt-out of drawing your app edge-to-edge.
Can we talk about the current state of Xcode?
Even the codeium integration on jetbrains is substantially less clunky than xcode’s codeium integration.
How server-driven UI is revolutionizing mobile app experiences
At Careem, agility and adaptability are key to delivering highly personalized and seamless user experiences as we need to move fast to react to customer behaviour during different times of the year, such as Ramadan
The Ultimate Guide to React Native Optimization 2025 is here! 🔥
The Ultimate Guide to React Native Optimization 2025 is here! 🔥
How 40 Lines of Code Sped Up iOS End to End Tests by over 50%
At Wealthfront, testing is one of our core engineering principles—in the form of unit and end-to-end testing on all platforms. The iOS team in particular manages its own CI infrastructure to run tests against an integration server
Skyscanner’s journey to effective observability
The year was 2020 and Skyscanner, like the entire travel industry, faced unprecedented challenges due to the global COVID-19 pandemic. Yet, this difficult year also provided an opportunity for introspection
Startup Time: Your App’s Make or Break Moment
Dream11 has revolutionised the way fans engage with their favourite sports in India. We host a community of over 230 million sports fans. During IPL 2024, we had more than 15 million fans
Transforming User Experience: How Dream11 Leverages Intelligent Image Delivery
One of the critical elements of ensuring streamlined user experience is media assets, particularly high-resolution images of players, teams, and event banners.
Supercharging Discord Mobile: Our Journey to a Faster App
nitially, we shied away from using React Native on Android due to performance concerns, but recent advances in Android device capabilities
Future for Java: Virtual Thread
This article offers an introduction to Java’s lightweight thread model, virtual thread, based on our study of it.
Revamping PickMe iOS App: From Objective-C to SwiftUI
A few months ago, we embarked on one of the most significant transformations in PickMe’s iOS app history. What started with just one developer
How the Tinder iOS App reduced the size of our localizations by 95% using Emerge
The Tinder iOS application is used in over 190 countries around the world. In order to operate in each of these countries, we need to provide a localized experience.