Develop a Mac Application

I would like an app developed that converts a series of photoshop files into an app that allows users to drag and drop the files into layers suitable for the creation of branding/graphic and illustration work. You'll find a link to the product which contains the files here: [login to view URL] The app would be similar to "canva" but simpler, using just the files contained in the package listed above. I don't know what the cost of development would be, so have not specified the estimated costings. I shall look forward to receiving your quote.