HP APM is a module that runs on top of PPM Center version 9.12, it requires PPM as a prerequisite, when you install APM, the following server-side components are required:
1. PPM Center version 9.12
2. PPM Center Best Practices
According to the pricing guide, for APM user license, it requires PPM Foundation License. Thus, APM cannot run as a stand-alone application, it needs to use with PPM.