This one went by the wayside because it just 'works'. But While digging around on how to add a QR (pumped code) I come across the news that Klarma is dumping stocard and making you use their app instead region by region.

Seems to not have a great rapport along with it.

So other than trying to get (google)wallet to be as fast as a tap on the stocard widget. What are your go to card apps.