Mobile application for "Golden Section" auction house. "Golden Section" auction house was founded in 2004 and since then has regularly carried out auctions and sales exhibitions of classical painting works of the XIX-XXI centuries, arts of alternative currents (avant-guard, nonconformism, underground), contemporary "actual" art, subject design and photography, and also the Russian orthodox icon. "Golden Section" app. allows to look through the information on auctions, lots, artists, departments of the auction house. Users have the opportunity to like the lots and to send the corresponding links by mail or through social networks. Besides, all contact information of the promotional house and specialists of the departments is available in the app.