I’m creating a cross-device personal finance platform that helps users grow their money without the usual paperwork. The product must launch simultaneously on iOS, Android, and the web, giving every user a consistent experience whether they’re on a phone, tablet, or desktop browser. Core experience Users sign in exclusively with Face ID and Touch ID—no photo IDs, utility bills, or other manual KYC steps. Once inside, they’ll be able to: • track investments in real time, • set up fully automated savings transfers, and • define goals—everything from an emergency fund to a long-term retirement target—and watch progress update instantly. Security & tech expectations Biometric data must be handled on-device only, with tokens passed to the backend for session management. I’m open to Flutter, React Native plus a responsive web front-end, or a comparable framework that keeps one codebase tidy across all three surfaces. Clean, modular code and well-commented APIs are a must so the platform can evolve (think future crypto wallets or budgeting AI). Deliverables 1. Production-ready apps for iOS and Android accepted by their respective stores. 2. A responsive web app deployed to my hosting account. 3. Backend (Node, Django, or similar) with REST or GraphQL endpoints for accounts, transactions, and goal logic. 4. Documentation covering architecture, environment variables, and deployment steps. 5. Two-week post-launch bug-fix window. If you’ve shipped biometric login at scale and have a knack for clear, modern UI tied to rock-solid fintech logic, I’d love to review your approach and timeline.