To calculate CPA, you need to divide the total cost of the advertising campaign by the number of customers acquired through that campaign.
Сost Per Acquisition Formula
CPA = Total Cost / Customers Acquired
CPA in Apple Search Ads Formula
CPA = Spend / Downloads
CPA in Apple Search Ads is the indicator to measure how much on average the conversion — install — costs. Average CPA is calculated by dividing the total spend by the number of installs from an ad in Apple Search Ads within a specific time frame.
Cost Per Acquisition Example
Suppose an ad campaign in Apple Search Ads cost a mobile developer $10000, and it generated 3000 new downloads. Then the CPA would be:
CPA = $10000 / 3000 = $3.33
This means that the cost per acquiring one user is $3.33.