Testing mobile applications is inherently more challenging than web applications due to the need to account for diverse hardware configurations and operating systems. MiniSim, an open-source, lightweight application for macOS, offers a streamlined solution for managing Android and iOS emulators, allowing developers to operate emulators from one place without opening Android Studio or Xcode. It utilizes xcrun and ADB to control simulators, offering features such as saving frequently used commands, modifying emulator behaviors with additional launch arguments, and toggling accessibility settings. Installation of MiniSim can be done via Homebrew or by downloading from Gumroad, and it requires macOS with Xcode and Android Studio installed. MiniSim simplifies the testing process by allowing developers to create and manage emulators, execute integration tests, and include custom launch parameters for Android emulators, enhancing the efficiency and effectiveness of mobile application development and testing.