Parcel Delivery Application for Android & iOS

I am in need of a delivery application geared towards parcel deliveries. The app should be compatible with both Android and iOS platforms, and includes the following key features:

- Real-time Tracking: The application must offer real-time tracking functionality. This feature is crucial as it enhances user experience by providing transparency and reliability in parcel deliveries.

- Multi-user Roles: The app should accommodate three distinct user roles - Customer, Driver, and Admin. Each role should have its own unique interface and set of functionalities.

Skills and Experience Required:
- Proficiency in Android and iOS app development.
- Prior experience in developing delivery applications, particularly for parcels.
- Knowledge in implementing real-time tracking features.
- Ability to design unique interfaces for different user roles.