Yes, on ios users need to redeem from the npub.cash website, however...
nostr:npub1kvaln6tm0re4d99q9e4ma788wpvnw0jzkz595cljtfgwhldd75xsj9tkzv Wallet has a LN to ecash bridge built in. When a note is zapped it automatically arrives as ecash in the Minibits wallet when you put a minibits.cash address in your nostr profile for android.
npub.cash requires extra steps in redeeming from the website which you have to log into first then use nostr:npub1dx5q2el8nd4eh3eg9t2e25fd7zuqg7zxz6ldkc3uzgh66ss2yc6st288sj wallet on ios