What Is Cost per Install (CPI)?

Cost per Install (CPI) is a key performance metric in Apple Search Ads that represents the average cost an advertiser pays for a successful app install generated via ad campaigns. CPI is calculated by dividing total ad spend by the number of app installs attributed to the ads.

This metric is crucial for advertisers to understand the efficiency of their campaigns and overall cost of acquiring new users. By closely monitoring and optimizing CPI, advertisers can ensure that they are achieving a favorable return on investment (ROI) and making the most of their ASA budget.

This key performance metric is sometimes referred to as cost per acquisition (CPA).