PlanGrid is a cloud-based service that delivers blueprints as PDFs directly on the tablet; then people working in the field can use these instead of paper-based versions. PlanGrid is a cloud-based construction document collaboration platform that allows plans and markups to be instantaneously shared with everyone on a construction project, no matter where they are. It lets contractors and architects collaborate from their desktop or mobile devices across all their project plans, specs, photos, RFIs and punchlists. It also has the capability of having old versions of the same drawing and will alert you when viewing an outdated drawing. This construction app offers a secure connection to upload, view and manager your online drawings.