This document discusses cross-platform mobile application development. It notes that developing for each mobile platform individually is costly, while cross-platform development can help reduce costs by reusing code across platforms. The document aims to research cross-platform development by creating tests to measure user experience, application performance metrics, and network errors on real devices using different frameworks. The conclusion is that no single platform dominates the mobile market, so cross-platform development is important but will need to adapt as platforms and features continue changing rapidly.