Mobile app testing tools and frameworks are software applications designed to automate, simplify, and enhance the mobile app testing process. They can be used to perform various types of testing, such as functional, usability, performance, compatibility, security, and localization. Additionally, these tools and frameworks can be used to test apps on different devices, platforms, networks, and environments. Popular mobile app testing tools and frameworks include Appium (an open-source framework for testing native, hybrid, and web apps across iOS and Android devices using any programming language), Firebase Test Lab (a cloud-based service that tests Android and iOS apps on real devices and emulators with detailed reports and screenshots), TestFlight (a platform for distributing iOS apps to beta testers and collecting feedback/crash reports), Espresso (a framework for writing/running UI tests for Android apps using Java or Kotlin), and XCTest (a framework for writing/running unit tests, UI tests, and performance tests for iOS apps using Swift or Objective-C).