Explore how to build a modern cash‑advance app inspired by MoneyLion—the kind of fintech solution that delivers instant access to funds, credit monitoring, and investing tools right from a smartphone. This guide outlines everything from critical features like real‑time approvals and secure payment integrations to cost factors such as platform choice, UI/UX design, team size and technology stack. Whether you’re aiming to launch a basic version or a full‑featured service, you’ll learn about monetization options—interest, subscriptions, ads—and the ongoing maintenance and compliance considerations that drive long‑term success.