Reassure

Theme by Callstack

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Updated: 14 Jul 2025

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1370 Stars

Performance testing companion for React and React Native

Categories

Overview

In the fast-paced world of mobile development, ensuring that your React Native app performs efficiently can be a daunting task. Manually profiling your app and checking for performance regressions can lead to missed opportunities for optimization or, worse, issues that arise during deployment. Fortunately, Reassure offers a comprehensive solution aimed at automating performance regression testing for React Native applications. This tool is designed to streamline the testing process by integrating seamlessly with your existing testing setup, making it easier to catch performance issues before they impact your users.

With Reassure, developers can confidently write performance tests alongside their regular integration and unit tests, ensuring a well-rounded approach to app performance. By measuring render times, counts, and using statistical analysis, Reassure provides actionable insights into your app’s performance, promoting faster development cycles and higher user satisfaction.

Features

• Automated Performance Testing: Automate the process of identifying performance regressions by running tests on both CI and local setups.
• Seamless Integration: Reuse your existing React Native Testing Library tests, allowing you to add performance testing without significant overhead.
• Statistical Analysis: Utilizes multiple runs and statistical methods to determine if changes in performance are significant, reducing the noise from random variations.
• Clear Reporting: Generates human-readable reports that summarize performance metrics, making it easier to understand and share results.
• Supports Multiple Libraries: Detects and works with both React Native Testing Library and React Testing Library, ensuring compatibility with your existing test setups.
• Flexible Configuration: Allows customization of the testing environment through environmental variables and setup files to best fit your project’s structure.
• JavaScript Function Measurement: In addition to component render times, it can also measure the performance of standard JavaScript functions, providing a comprehensive view of performance.
• Continuous Integration Ready: Written specifically to fit into CI workflows, enabling you to catch performance regressions early in the development cycle.