., Nest Bank, Bank Pocztowy, BOŚ Bank, Citi Handlowy, Bank Spółdzielczy w Brodnicy, Bank Spółdzielczy Rzemiosła w Krakowie, Krakowski Bank Spółdzielczy and Revolut mobile apps. To start using BLIK, download the mobile app of one of the above banks where you have an account on your phone.4. Which currency does BLIK support? BLIK supports only the złoty (PLN) currency.5. What's a BLIK code? A BLIK code is a one-time 6-digit code generated in a mobile banking app that allows you to make payments.