Financial services firm Mode, which is backed by Twitter co-founder Biz Stone, has rolled out its Bitcoin banking app on iOS devices. Mode, a financial services firm backed by Twitter co-founder Biz Stone, has rolled out its Bitcoin ( BTC ) banking app on iOS devices. The British company made its app available globally, with the exception of the United States, fintech-focused media outlet Finextra reported on Feb. 4. Customers can start using the app with as much as £50 ($65) and buy Bitcoin with bank cards or through a bank transfer. The funds are further processed through digital assets custodian BitGo. Mode addresses speed and security issues The app ostensibly allows users to credit funds almost instantly by means of a Faster Payments process. Ariane Murphy, head of communications and marketing at Mode, said that “the Mode app addresses transaction restrictions issues, low speed/high cost, lack of security and most importantly, tackles the poor user experience typically associated with Bitcoin apps.” Prior to using the app, Mode requires that users undergo a Know Your Customer procedure, which is carried out by AI-enabled identity verification technology.