Hi,
I'm Sabyasachi Saha, Technical Director of Techno Exponent. I am having B.E. & M.E. Degrees in Computer Science. I have an in-house team of 132 Technical Staffs and 43 UI/ UX Designers.
I know OfferUp very nicely, and I can make a clone of it. Users can register/ login (we will keep social media login options), verify email and then get into the app and the product listing screen will be shown at first. User can sort them by "Meet Local" or "Ship to me". User can directly type the name of any product on the search bar and get the product. User can filter the list based on Price "Min" to "Max", Newest, Price Low to High, and High to Low. From the Listing Screen, user can tap on any product and the Product details screen gets loaded. The Product Details screen will show The images of the product, Cost, Address, Posting Time, Profile link of the Seller with small image, name, and average rating and total number of review. There will be Description, Google Map with the location pinned, and the links to "Save", "Report", and "Share". User can Ask something to the Seller or can make an offer and submit. User can share this page or Quick Save or can Create a New Board.
User can post something with a Title, Image, Details, and Price. User can check offers of Selling, Buying and Boards differently. User can check messages and reply to them, can check notifications. We will enable Push Notification.
Do you also want the Forum? Let's chat to discuss in details, Thanks!