Fintech apps that let you borrow against your next paycheck should be required to show the total annualized cost before you tap "accept." I tested three of them last month on a $400 advance and the effective APR ranged from 36% to over 300% once you count the flat fees and tip prompts. A friend in Manila uses one weekly and swears it's cheaper than her bank's overdraft, which might be true and still not make the disclosure optional. So: mandate it, or does that push people back to payday lenders?