HighSign Pro is the operating system for independent billboard and out-of-home operators — the flat-priced, self-serve alternative to SignDash, Apparatix and the spreadsheet. Every face and unit with a live occupancy calendar and a map of your plant, land leases with renewal alerts, advertisers and flighted campaigns, proof-of-posting photos, invoicing in 17 currencies, gap alerts, reports, and a shareable availability page. Free up to 5 faces, then $29–$149/mo. No demo call to see a price.