How do we calculate it?
We use different profiles to emulate searches that are happening in the Appstore by pinging Apple servers millions of times during the day.
What is the methodology?
We use several statistical sampling techniques to overcome accuracy problems, such as sending a lot of requests, using multiple users, sending at different times throughout the day. What is worth mentioning here is that there are discrepancies between SoV's. Nevertheless, we believe that seeing bidding trends of your competitor and actual keywords targetted by your competitor is still has a lot of value.
How often is the data updated?
The data is updated daily.
What is the data coverage?
Only covered for the apps that have Apple Search Ads efforts.