Revolut now has a web app [1], which still tries to get you to log in via the mobile app but this is not necessary. So long as you know your pass code and have alternative access to your email then you can log in and do most of the things you can do via the app. You do have to wait 10 seconds for the privilege though (before allowing access via email there is a timer before you can confirm you do not have access to the mobile app.).

1. https://blog.revolut.com/introducing-the-revolut-web-app/