Mobile App or PWR for supermarket price comparison -- 2

I am looking for a skilled developer to create a mobile app or PWR (Progressive Web App) for a supermarket price comparison. The app should be developed for both iOS and Android platforms. Features: For the creation of a tool that will be used on smart phones, I am looking for a partner to help me: a) Create a simple mockup of my application b) Create a simple MVP c) Help me publish everything on a server, linked to my [login to view URL] domain registered on namecheap Phases a) b) c) can also be carried out by different collaborators, therefore not necessarily by a single interlocutor I therefore ask for a separate quote for the three initial phases of the project. I'm not interested in a complex or super cool UI and graphics, initially I'm interested in being able to create a working prototype. After a testing phase with a few people, I will evaluate whether to implement the project with additional features At the moment, phase a) is the one that interests me I summarize the basic features of the application below: User registration using the most popular methods Ability to invite other users to collaborate Insertion of items by users into a list of favorite items, both new and existing items in the general database, search and insertion via barcode, possibility of entering the price, the name of the store will always be the one chosen by the user during the registration . Creation of a database of products inserted by users, possibility for the administrator to make changes, above all add name and complete description of the product Price comparison detected by users but only among those from whom I have been invited to collaborate or who I have invited to collaborate Creating a list with the lowest prices found by comparing the favorite lists of users who have agreed to collaborate with each other, the comparison is always made between equal barcodes. Management of orders sent between users Order history management Record of savings achieved by individual and general users Management of the product delivery phase divided by individual users Management of friends list (assign a group name, delete, invite ..etc.) Management of the user's favorite stores list, the user must enter the name and location of the favourite store, other stores can be added, but only one will be selected like preferred Possible multilingual management of this tool. I attach indicative wire framing of my project Timeline: - The project should be completed within 1-2 months. Skills and Experience: - Experience in developing mobile apps for both iOS and Android platforms is required. If you have the necessary skills and experience, a please submit your proposal for this project.