MALS [maʊs] is a tool used to test the application on the Android mobile phone launch response speed. Its full name is Measure Application Launch Speed. The tool can be used to test the application of the 'hot launch' speed and 'cold launch' speed,wherein 'hot launch' indicates the application that has been opened before test. In other words, it means the app has been in phone's background before test. On the contrary, 'cold launch' means the app has been killed from phone's background before test. You can choose one of them according to your own needs. And the default value of MALS is testing 'hot launch' speed.