Sigh...I'll say it again...you cannot have privacy on Ethereum.
This is another project that is attempting to use zero knowledge proofs as a buzzword to make their project seem more legit, when it's more of the same nonsense.
Sure, some level of privacy can be achieved by implementing a layered solution like this. But the inputs and outputs that get recorded on the main Ethereum chain can be monitored.
There also isn't a whole lot of information about the project on the website. It looks sketchy. Show Less