Build an ios application

Hi. I am Mostafa, a camel veterinarian.

I want to build an ios application to sell camels. Sellers will post their camels for sale and buyers will view these camels and contact the sellers for inquiries if they want.

No signup will be required except for posting a camel or contacting a seller.
Phone verification through SMS.
Payment methods for paid services on the application like premium ad placement or special ads.

Filtering and search:
The app shoud be like OLX in terms of filters and search. This is the most important part of the app. A robust and powerful filtering and search capability should be created for the users to search for and filter camels based on different criteria.

The language of the app will be Arabic only.
Sellers will be able to show photos and/or videos of their camels.

I want the app to be written using Swift and i want the source code to be available to me.

Additionally, i have a website that i want to be part of the app.

I want an Egyptian developer so i can contact him in person.
Thanks