How is Intel's Remote Management Module (RMM4) different from Supermicro's IPMI/BMC?

I am new to IPMI BMC (always used KVM) and I would like to understand what are the differences between Intel's implementation on IPMI BMC using its RMM4 module and that of Supermicro?

I've read though the documentation and appears pretty standard. Are there any additional security features? I noticed that Supermicro have a mobile app, is there anything similar for Intel?

Are there any other differences (aside from needing to purchase Intel's module separately), benefits or drawbacks between Intel and Supermicro?