OverrunShield builds free, practical tools for the people who keep construction and infrastructure schedules honest: planners, schedulers, project controls managers, and the owner's engineers who review their work. Upload a Primavera P6 XER or XML export and get a first-pass answer in minutes: a DCMA 14-point health check, a baseline-versus-update comparison, a schedule risk simulation, or a portfolio view of which project needs attention first. The tools run on screen with no signup; a 6-digit email code unlocks the PDF report. For delay and claims work: a delay notice builder for FIDIC, NEC and JCT that shows the notice deadline, a prolongation cost calculator that compares Hudson, Emden and Eichleay side by side, and plain-English guides to time impact analysis, windows analysis, concurrent delay and prolongation claims. Plus 31 free project management templates in Word and Excel — risk register, RFI log, daily report, 3-week look-ahead, weekly progress report and more. Every result is an automated first-pass diagnostic, not a certified expert review or legal advice. It tells you where to look before a schedule submission, an EOT claim or a monthly report goes out. Built for medium-to-mega projects across heavy civil, infrastructure, building and EPC work — in the Gulf and worldwide.