Cross-Platform Budgeting App Prototype

I need a working prototype for a budgeting app that is compatible with both iOS and Android platforms. The app should have the ability to connect to various types of accounts, including savings accounts, checking accounts, and credit cards.

Key Features:
- Automatic connection to banks
- Automatic categorization of expenditure and income based on transaction descriptions
- User-friendly, clean and digestible interface

Ideal Skills and Experience:
- Proficiency in cross-platform app development
- Experience with API integration for bank connections
- UI/UX design skills to create a clean and easy-to-navigate interface
- Prior experience with budgeting apps is a plus

The goal is to create a prototype that stands out from the numerous budgeting apps already available on the Apple Store.