Ordering, acceptance and consumption of construction materials. Late delivery and a long procedure for accepting materials, as well as a large number of reports on their consumption, can significantly shift the completion dates of construction. In many ways, these problems are associated with the high workload of foremen, whose area of responsibility includes the above functions. Being on the construction site most of the time, foremen do not always have the opportunity to simply return to the working computer in order, for example, to order the missing materials. Some mobile solutions partially cover these needs, however, if you give workers the opportunity to independently make purchase requests through the application, provide all invoices with QR codes for scanning using a smartphone, etc., then the process will definitely go faster;