Hi,
I will create you a complete system with apps for both iPhone & Android. the admin will have access for the dynamic catalog where they can change the following:
1. adding \ editing main categories, names, icons and other details
2. add \ edit new items
3. fields for the entries will not be static any more, it will be dynamic where you can add new field any time and it will be reflected for all items
4. ability to upload all information from excel, connect to your database , etc ...
5. integration with social media like twitter & Instagram
from quality point of view, I am sure that our system will be impressing for you and we will ensure your full satisfaction.