Ad networks use several key metrics to track Android Pay Per View (PPV) ads to measure their effectiveness and optimize performance. The primary metric is impressions, which counts how many times an ad is displayed to users. Viewability rate is also crucial—it measures the percentage of ads actually seen by users, not just served. Click-through rate (CTR) helps determine how many users clicked the ad after viewing it, even though clicks aren't the payment basis in PPV. Engagement time tracks how long users stay on the ad page, offering insight into interest. Other important metrics include geolocation, device type, and frequency(how often the same user sees the ad). Together, these metrics help refine targeting and improve campaign efficiency.