Right now, this is one of the strongest tools on the market if you want to launch your own neo-bank and issue virtual cards. The best part is that you don't need to invest serious money right away: you can start literally for free. There's a bot builder and a pretty decent API without strict limitations.
In fact, it's almost a perfect solution. If they added more payment options for end users and allowed for more than just color choices in the builder, but actual design options, it would be unbeatable. The only thing missing is a mobile app, or rather — a proper app builder or generator.