Starting with Katalon Studio version 6.3.0, you can spy and record testing an installed application on Android and iOS devices, NOT on Kobiton and remote ones.
Open Mobile Object Spy/Mobile Recorder with Android or iOS devices.
In configurations, you can start spying or recording on an existing application with an application ID. Select Application ID, enter the application ID in the corresponding text field, the Start button will be enabled.
In Mobile Recorder
In Recorded Actions, the first action is Start Existing Application.
After you press OK button to finish its recording session, Katalon Studio will generate script with