Mobile app for doing calculations

I am looking for a reliable and experienced mobile app developer to help me create a high-quality application for basic arithmetic calculations. The app should be compatible with Android application. I also have a detailed plan for the design and user interface of the mobile app, so the ideal developer will be able to translate these ideas into a reality. The perfect person for this project should be flexible and creative, with a strong background in mobile app development. I'm looking forward to having a great partnership with the right person so I can have a custom-made app to meet my needs!