Are We Measuring the Wrong Performance Metrics?

Most teams obsess over startup time and smooth animations, but I think the real performance problem shows up later in the session.

Apps rarely fail in the first minute. They fail in the thirtieth.

Memory leaks slowly inflate the heap. Allocation churn causes random GC pauses. Heavy work on the main thread leads to ANRs. Crash-free rates can look fine until you scale and realize even a 0.5 % crash rate means thousands of broken sessions.

Startup speed is a first-impression metric. Stability is an endurance metric.

I wrote a deeper breakdown on this topic which includes tools, metrics, and optimization patterns, here if you’re interested:

https://www.digia.tech/post/mobile-app-stability-memory-leaks-anr-crash-optimization

Curious how many teams actively monitor heap growth over session time or tail-percentile stability metrics instead of just launch time and FPS?