Minimalist UI Design for Productivity App

I'm seeking a talented UI designer to craft a clean and minimalistic interface for my productivity mobile app.

Project Workflow:
- Milestone-based work
- Start with the landing page. Approval required before proceeding to other screens.

Key Requirements:
- Strong portfolio showcasing mobile app UI designs
- Proficiency in Figma, Adobe XD, or similar design tools
- Exceptional attention to detail and adherence to clean design principles
- Effective communication and responsiveness throughout the project

Please include:
- Your portfolio with relevant work
- Estimated turnaround time for designing a single screen

Looking forward to your creative input and collaboration!