Gonna take a stab.. Like Monero for Bitcoin?
Discussion
Monero obfuscates the sending and receiving to make it untrackable. You can find where a TX came from on Bitcoin blockchain as it is tied to your IP address. Cashu works like Monero for Bitcoin. Someone correct me if I am wrong in this analogy
Partly correct.
Monero amounts and addresses are not visible, period.
Ring signatures obfuscate senders (visible, but probabilistic)
Cashu is also very good privacy. Amounts, senders, receivers all hidden even from the mints themselves.
A few differences are that Monero is self-custodial, Cashu isn't, so you can be rugged.
Every mint can also arbitrarily print Cashu tokens unbacked by Bitcoin.
Not possible with Monero.