Hello, there.
We can create a comprehensive iOS grocery shopping app with user registration, product catalog, shopping cart, payment gateway integration, and customizable interfaces for both customers and merchants, meeting the project's milestones of architecture, UX design, implementation, cloud deployment, and App Store deployment.
We use only professional clean modern ideas for design. We have years of experience in website design, graphic design and logo design (photoshop, illustrator), banner design, brochure design, 3d design(Blender, 3d-max, WebGL).
Please, review our experience here - https://www.freelancer.com/u/webbookstudio.
We will be glad to chat with You and discuss your task. Waiting for Your reply! Best regards.