Yes, Even Beginners Can Diagnose App Bottlenecks! - App Performance Monitoring

A comparison of Firebase Performance SDK and Codzilla (Quzilla) SDK for monitoring app performance in a Kotlin Multiplatform (KMP) Android project. The demo simulates thread-blocking delays in a ViewModel and MainActivity to show how each platform detects bottlenecks. Firebase Performance only surfaces a basic app-start delay metric and requires manual trace setup. Codzilla automatically detects slow dependency initialization, shows the full dependency graph, identifies the problematic class, and provides actionable insights without manual instrumentation. The walkthrough illustrates how cascading initialization delays across nested navigation components can compound into longer total startup times.