Portal DA mobile application of the service, designed for the purchase and sale of collateral and non core assets. A universal platform with a user friendly design has been created for investors and sellers, taking into account all business needs. Implemented a convenient search directory, chat, ad placement form. Portal DA simplifies the complex process of purchasing large assets, on the one hand, by allowing clients to easily find and get detailed information on the necessary asset and, on the other hand, by providing related services.