Closed my Revolut account earlier this year, seems like I was a bit too late.
Who am I kidding, they're all exactly the same.
One useful distinction: Revolut is a licensed bank, not a p2p app, and it had its own breach in 2022 exposing roughly 50k customers' data. You can't audit their security, only your exposure. So minimize stored PII, freeze your credit file, and keep balances spread. Asking which app is safe is the wrong question.