That’s interesting that a bank named “Simple” started in Hungary!
Simple in the US is basically the first of the mobile first banks of the new generation. Founded in 2009, it is now part of BBVA. As far as I know, they were the first with push real time notifications for card payments. Something they developed with Visa.
I’d love if BBVA would bring Simple to Europe. It’s still gold standard in how budgeting / saving goals are implemented, and how it works together with their “safe to spend” feature. Also, the app design and corporate identity are really good.