i need a simple android app for my architect business for showcasing portfolio and construction cost calculator/estimator

I am looking for a developer to create a simple Android app for my architect business. The app should have two main features: a portfolio showcase and a construction cost calculator/estimator.

Design preferences:
- Vibrant and colorful

Cost calculator/estimator features:
- Material cost estimation

Ideal skills and experience:
- Android app development
- UI/UX design
- Experience with cost calculator/estimator features