How Mobile Development Teams Use Kotlin in 2025
Article Summary
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.
In this second installment of a two-part series, González shares practical insights from training engineering teams on Kotlin mobile development. He covers the most common production pitfalls, essential monitoring setups, profiling techniques, and how to start with Kotlin Multiplatform without overhauling your entire codebase.
Key Takeaways
- Swallowing CancellationException disables cooperative cancellation, breaking timeouts and lifecycles
- Set up crash-free users, ANR rates, and JankStats in two hours for immediate production visibility
- Android Studio's CPU and memory profilers reveal allocation spikes blocking the main thread
- Start Kotlin Multiplatform by sharing one utility function, not rebuilding your entire app
- Sentry traces show cold start, API calls, and rendering in one timeline for bottleneck detection
Mobile teams can avoid the most common Kotlin production bugs and set up effective monitoring in hours, not days, using tools they likely already have.
About This Article
Mobile teams have a hard time spotting performance bottlenecks in production. Slow transactions and frame drops hurt the user experience, especially across different device models and Android versions.
José Luis González suggests pairing Sentry's Performance tracing with JankStats and Android Studio's CPU profiler. This approach captures cold start times, API call durations, and frame-time data all in one timeline view.
Teams can see exactly which screens drop frames, which HTTP requests block rendering, and where memory spikes happen during transitions. This lets them fix problems directly instead of digging through logs and guessing.