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. We also empower app makers to acquire users using advanced targeting (e.g. app targeting) for performance (CPI) campaigns and track ROI. Heyzap is open to all mobile apps on iOS, Android, and Amazon. Heyzap Mediation specifically gives thousands of developers the power to dynamically test mobile ad networks against each other, and automatically deploys different networks to maximize revenue. With our Mediation Insights tool, app developers benefit from true performance metrics that enable them to make country and network-specific decisions at a single glance.