There are plans for interoperability between the various European payment apps.

My local app (MB Way, PT) can be used to send money to Spain and Italy. Others will follow.

https://www.mbway.pt/a-interoperabilidade-e-o-futuro-dos-pag... (link in portuguese)

Wero is the alternative, it's moving on quite well. https://en.wikipedia.org/wiki/Wero_(payment)