Minimalistic Business App Development

I'm seeking an experienced app developer to create a simple and minimalistic app for my business on both iOS and Android platforms.

Key Requirements:
- E-commerce functionality
- User-friendly, minimalistic UI
- HIPAA compliant

Ideal Skills and Experience:
- Proven experience in cross-platform app development
- Strong portfolio in minimalistic UI design
- Expertise in e-commerce app integration

Please provide examples of your previous work and a detailed plan for this project.