The goal of iOS app testing is to evaluate an application's functionality and user experience on actual Apple devices. Native, web, and hybrid apps have different characteristics that require testing to ensure compatibility. Manual testing involves running the app on a device or simulator and navigating through test scenarios, while automated testing uses scripts to automatically walk the app through test scenarios. Automated tests can be end-to-end tests that simulate user experiences or unit tests that isolate individual components of an app. Various frameworks such as Appium, Frank, KIF, and UIAutomation are available for iOS testing, offering different approaches to automation and integration with CI systems.