Abysmal
Santander has the worst banking applications I have ever seen. It blows my mind how such a huge structure doesn’t care to make or copy a decent app. Also their servers suck, I can’t use basic functions, because they don’t event load. I’ve got a 300mb/s internet connection and I’m lucky if I’m able to check my transactions or form an excel/pdf document. It just doesn’t work most of the time.