Weekly Digest
Dec 15 - Dec 21, 2025
11 articles that week
React Native Wrapped 2025: The Year We Entered Our Polishing Era
Josh Yoes from Infinite Red declares 2025 as React Native's 'polishing era.' Seven releases, zero breaking changes in the final drop, and the New Architecture migration finally complete.
What's New in Swift: December 2025 Edition
Tim Sneath reflects on Swift's explosive growth: from a simple blog post 10 years ago to 70+ repositories with hundreds of weekly contributors. The language now runs everywhere from Pebble watches to AWS Lambda.
Adaptive Design: Moving Beyond Mobile-Only Apps
Fahd Imtiaz from Google's Android team reveals a stark reality: tablet and foldable users spend 9-14x more on apps than phone-only users. The mobile-only era is officially over.
How Mobile Development Teams Use Kotlin in 2025
José Luis González, a JetBrains-certified Kotlin Trainer, reveals the production bugs that still plague mobile teams in 2025. One tiny mistake in exception handling can silently break your entire app's lifecycle management.
Why You Don't Have to Minify JavaScript Code in React Native Apps
Davyd Narbutovich from Callstack challenges a web development habit that React Native developers can skip entirely. Turns out, minifying JavaScript in your RN apps might be wasted effort.
Exploring the Swift SDK for Android
The Android workgroup just dropped Swift 6.3 SDK nightly previews for Android, and several production apps with millions of downloads are already proving it works at scale.
Rewriting an app with millions of users: The talabat story
Talabat rewrote their app serving millions of daily users across 8 countries without a big bang migration. Here's how their CTO and engineering team pulled it off with Flutter.
Kotlin 2.3.0 Released
Kotlin 2.3.0 just dropped with some serious multiplatform firepower. If you're building cross-platform apps, this release fundamentally changes how you work with Swift, Wasm, and native code.
Profiling MLC-LLM's OpenCL Backend on Android: Performance Insights
Running LLMs on Android devices just got a serious performance deep-dive. Callstack profiled MLC-LLM's OpenCL backend to uncover what actually happens when you run local AI on mobile hardware.
Supercharging User Engagement: How Mercari is Using Server-Driven UI to Reduce Time-to-Market
Stefan from Mercari's Growth Platform team reveals how they eliminated app releases for marketing campaigns. Their server-driven UI solution turned weeks of development into minutes of drag-and-drop c...
How AI Is Transforming the Adoption of Secure-by-Default Mobile Frameworks
Meta just shared how they're using AI to automatically fix security vulnerabilities across billions of lines of code. The twist? The AI doesn't need to be perfect to be incredibly useful.