How to keep the old Ionic App while running another new one

Hi there, good day. I’m new to the Ionic world and I would like to know how to keep the Ionic App already installed in the device while another Ionic App with different names being run on the same device? For instance, an app ABC already run and being installed on the real device and if another app 123 run on the same device, the previous app ABC will kick out by this new 123 app. I tried using the --prod --release flags but same thing happened.