CPI is the dominant model in the mobile advertising market. For example, 59% of Facebook’s advertising revenue in the second quarter came from mobile advertising, the main share of which is CPI, Venturebeat writes.  But the cost of such advertising is very high, moreover, it continues to grow. According to Fiksu, the annual price increase for installations was 16% on iOS and 44% on Android. Today, many cannot afford it. For large advertisers, its high…