Windows App Development for Lending Business

I'm looking for a Windows application for my small money lending business. The app should also be easily adaptable for an Android version in the future.

Key Functionalities:
- Client Management: Organize and manage client information.
- Loan Management: Oversee all aspects of loans.
- Payment Tracking: Monitor and track payments.
- Sample Calculation: Provide loan calculations for prospective clients.
- Account Tracking: Allow clients to track their account progress.
- Categorization: Organize client accounts by branch or referral agent.

Ideal skills and experience:
- Experience in developing Windows applications.
- Knowledge in financial or loan management systems.
- Ability to create user-friendly interfaces for both clients and administrators.
- Future-forward thinking for Android adaptation.
- Strong background in client management systems