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App Performance


Performance Monitoring and User Experience for Mobile App Growth

Mobile app performance monitoring

The mobile app industry has witnessed explosive growth over the past 10 years and mobile apps have now become ubiquitous and an integral part of our lives. User expectations for performance have increased with their reliance on mobile apps—the average mobile user today has very low tolerance for poor app performance and stability. And that is highly justified since mobile apps are no longer a novelty we amuse ourselves with, but a critical tool that we depend on for our personal and professional day-to-day lives.

In this post, we will take a look at the science behind app performance, the app performance monitoring benchmarks you should target, the impact of app performance on your app’s success, and a quick overview of app performance management principles.

The science of app performance standards

Research shows that mobile app performance expectations aren’t just user demands—they’re neurologically hardwired. Human-computer interaction (HCI) studies since the 1960s have demonstrated that humans are most comfortable, efficient, and productive with computer response times of less than 2 seconds.

Waiting more than 2 seconds forces users to concentrate up to 50% harder to retain their attention. The 2-second threshold impacts user satisfaction, stress levels, and conversions.

User expectations and perception of mobile app performance




Impact of app performance on business metrics



App Performance Management Principles

Use Apdex scores

Apdex scores can be more useful than traditional KPIs like response times because they represent a more holistic view of app quality and can be calibrated to your use case. Apdex is a comprehensive metric that assesses the quality of the overall experience

Extensive testing

Testing reduces production errors by as much as 70%. Bug Reporting tools reduce the time, cost, and resources needed to debug and repair issues by automatically capturing device and session details.

Collect user feedback

Find product-market and drive 5-star reviews by sending in-app surveys and routing promoters to leave app store reviews, and detractors to your private inbox.

Monitoring & alerts

Understand your app’s performance as perceived by your users with client-side app performance monitoring and mobile-specific metrics. Set performance thresholds and alerts to help you immediately catch and fix issues before they impact revenue, engagement, or retention.

App performance KPIs

All apps have different needs and standards for performance. These are average benchmarks for satisfactory performance:

  • Apdex score: ≥ 0.90 means your app’s performance is

  • Excellent Stability: Crash-free users >99 %

  • Crash-free sessions >99.9 %

  • App launch:

  • Cold: 2-4 seconds

  • Warm: < 2 seconds

  • Hot: 1-1.5 seconds

  • Screen loading: < 0.5 seconds

  • Network response: < 1 second

  • Key App traces: < 2 seconds

  • UI performance: < 250ms

Enhance stability

Crash reporting is an app’s first line of defense against uninstalls. Crashes are the worst-case scenario for users and a 1% drop in stability rating can lead to a 1-star drop in app-store rating. 53% of users uninstall apps that crash, and 80% of users will give a problematic app less than three tries.

Release frequency

The top-grossing apps in the Google Play store update on average every 9 days. Aim for frequent incremental changes and optimizations and balance between new features and performance improvements.


Optimize your workflow for team collaboration and efficiency. App quality tools with code ownership features allow you to stay on top of the issues relevant to you and eliminate the noise of issues irrelevant to your team, improving visibility and drastically decreasing time spent on triaging and assigning issues.

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