Mobile App Performance
Also written as ANR, Application Not Responding, App Startup Time, Android Vitals, Xcode Instruments, Android Profiler
How fast and smooth an app feels: how quickly it starts, whether scrolling stutters, battery and memory use, and app size. On Android, an ANR ('Application Not Responding') is when the app freezes long enough that the system offers to close it; Google Play's Android Vitals tracks these and crash rates and can reduce an app's visibility in the store. Measured with tools like Xcode Instruments and the Android Studio Profiler.
Think of it like
A shop that takes ten seconds to open its door loses customers before they've seen a single shelf.
Junior or senior?
Strongly differentiating — many developers ship features but few measure speed.
Senior sounds like
Can give before-and-after numbers for a performance fix and the tool they used to find the cause.
Ask them
“Tell me about a performance problem you fixed in a mobile app. What were the numbers before and after, and how did you find the cause?”
Reading Mobile App Performance on a resume
- High signal
- Mobile App Performance genuinely separates candidates, so it is worth leading a screening call with it. Its presence is a reason to talk; the question above tells you whether the experience is real.
Sourcing for Mobile App Performance
Every way it's written
("Mobile App Performance" OR "ANR" OR "Application Not Responding" OR "App Startup Time")Paste into LinkedIn Recruiter, Naukri or your ATS. Combine with a job title and location.
Wider net, with accepted substitutes
("Mobile App Performance" OR "ANR" OR "Application Not Responding" OR "App Startup Time" OR "Android Vitals" OR "Xcode Instruments")Includes skills a hiring manager would usually accept instead. Use it when the exact search runs dry.
Job titles to search alongside it
Mobile Engineer · Android Developer · iOS Developer · Mobile Application Developer · React Native Developer
Where this talent works in India — Mobile Engineering
Target companies with a large installed base and frequent releases — consumer fintech, food and quick commerce, streaming and gaming. App-agency experience looks similar on paper and behaves very differently at scale.
For example: PhonePe, Swiggy, Eternal (Zomato, Blinkit), CRED, Dream11, JioHotstar, Truecaller, Paytm.