Freestar

Freestar operates as a publisher-focused ad technology and services company. It builds and maintains monetization infrastructure—header bidding wrappers, a publisher operating system, in‑app mediation, and identity solutions—alongside specialist services for audience development and fully managed monetization. By integrating demand sources, optimizing auctions, and improving audience resilience and addressability, it aims to increase net revenue for publishers while simplifying ad operations and reporting. The company creates value by centralizing complex monetization workflows into a single stack (pubOS and Flex), offering a single SDK for app mediation, and layering yield expertise and strategic consulting for publishers without large internal ad ops teams. Its acquisitions of Sortable, Chocolate, and Triple13 expand its technology footprint and global reach, reinforcing its role as an end‑to‑end publisher monetization partner.

Freestar (Publisher First, Inc. dba Freestar) is a U.S.-based publisher monetization platform and services provider. It offers a suite of products for digital publishers, media brands, and app developers that combines header bidding infrastructure, in‑app mediation, identity and audience development tools, unified analytics, and managed ad operations. The company makes money by helping publishers optimize and sell their advertising inventory across web and mobile app environments, using both technology platforms (pubOS, Freestar Flex, App Mediation Platform, Identity Solutions) and high-touch services (Audience Development and Fully Managed Monetisation). Its customers are primarily small to large digital publishers and app developers who pay through revenue-sharing agreements and related service fees tied to ad revenue uplift.