One data point: I made a banking app (Creator Cash) and it's 37.1 MB on the App Store. - Used React Native - More features than you'd expect from a typical ba

One data point: I made a banking app (Creator Cash) and it's 37.1 MB on the App Store. - Used React Native - More features than you'd expect from a typical bank (card issuing/ management, sending payments, invoicing, CRM of contacts to pay/invoice, push debit to fund your Creator Cash account from your brick and mortar without having to send from the brick and mortar, data viz for earnings by platform, earned wage access aka cash advances, and more) - Uses Stripe Treasury for BaaS I could speculate, but I'm not really sure what causes that much bloat in other banking apps.