Trade-Up is an intuitive and effective software solution for construction subcontractors. Trade-Up measures the productivity of groups of workers on construction sites by getting users to utilize mobile internet devices. A daily productivity score is generated by the system, which can be used to track project progress against KPIs established at tender time. The productivity score is also used to make other areas of a subcontractor's business more efficient such as payroll, tendering, labour costing, variations and claims. Trade-Up helps subcontractors move away from paper based systems, giving unprecedented levels of efficiency and transparency in operations.