i am looking for an experienced person who can design a simple mobile business App.in shortest period possible.that can notify client about a percel delivery services

I am seeking an experienced individual who can design a simple mobile business app in the shortest period possible. The main purpose of the app is to provide parcel delivery services and notify clients about their parcel deliveries. The app should be developed for both iOS and Android platforms. Key functionalities that are expected in the app include real-time tracking of parcels, push notifications for parcel updates, and the ability to book and make payments for parcel delivery services.