Heyzap (Acquired by Fyber) | 1,034 followers on LinkedIn. Heyzap is a developer tools platform and mobile ad network aiming to bring automation and transparency to the mobile ad ecosystem. Heyzap is building a mobile app developer platform that includes Mediation, Direct Deals, Cross Promotion, and SDK and API monitoring tools. Heyzap mediates rewarded video, interstitials, banners, and other formats.