Monzo is a mobile-only bank based in the UK that was founded in 2015. It grew quickly, becoming the quickest crowdfunding campaign in history in 2016. Features include notifications of transactions in real time, transparency, and the ability to manage finances through their mobile app. Monzo aims to provide an alternative to traditional banking that is simpler and keeps customers informed through their smartphone. The bank had over 480,000 customers with personal identification numbers by 2019.