Pirate Chain (ARRR) is a 100% private send cryptocurrency. It uses a privacy protocol that cannot be compromised by other users activity on the network. Most privacy coins are riddled with holes created by optional privacy. Pirate Chain uses ZK-Snarks to shield 100% of the peer to peer transactions on the blockchain making for highly anonymous and private transactions.
It is similar to Monero but instead of shuffling the addresses to hide the user's transactions, Pirate chain shield the transactions in the first place which prevents any prying eyes from even attempting to track and trace.
In other words, Pirate Chain is "privacy by default" instead of "privacy as an after-thought"