Hello, hope you're doing well. I have reviewed your project. I am an expert app developer and can build an app with the functionality you have mentioned in the project description(i.e. allows owners to create categories, etc.) as per your requirements.
"Let's have a QUICK CHAT to discuss further"
I have extensive experience in designing and development of Websites, Mobile Applications, Management Systems and E-commerce or Online Stores Solutions.
Kindly have a look at my Portfolio and Client's reviews via this link,
https://www.freelancer.com/u/junkyfunky
Thanks,
Faizan A.