Multi-platform Math Calculating App

I am looking to hire experienced app developers who can create both an iOS and Android app. The main goal of this application is to serve as a platform for mathematical calculations, with a primary focus on complex operation.

Here are the specific features I would like to incorporate into the app:
- Advanced mathematical functions
- Unique ability to perform reverse odd calculations

Ideal candidates will have a proficient knowledge of both iOS and Android app development processes, with a demonstrated experience in creating educational or mathematical apps. Knowledge in implementing advanced operational algorithms and problem-solving skills will be advantageous for this project.