[wjoe]

I hear of Revolut more in the context of using it as a service for sending money internationally, but I know plenty of people who use Monzo for day to day banking (although most also still have an account with a normal bank).

It doesn't surprise me that more people have used Revolut at some point, but I would still expect that Monzo has more active users.

Edit: This is in the UK, I understand Monzo isn't quite as well known elsewhere.