You can run two instances of any app (like WhatsApp or games) simultaneously—one on your main system and one in the Android 12 VM. Key Features of the Android 12 ROM in VMOS

Upgrading your virtual environment to Android 12 brings several modern enhancements:

Installing a virtual ROM is simpler than flashing a traditional one since it doesn't require an unlocked bootloader or PC. VMOS – Apps on Google Play

About this app. ... VMOS is a virtual machine system on Android, which allows you to install different ROMs on your Android phone, Google Play

Apps installed in the VMOS virtual machine do not affect your real phone, providing protection against crashes or potential malware.