This page helps you to see the paid keywords you & your competitors have in common.
Once you initially click the Search by Competitor Page, you see a blank page in which you'll have to select your competitor to see the mutual keywords, then pick a country and generate the keywords.
You can compare the impression share and the rank of the paid keywords for each app you have selected and see the total number of apps that are ranking for that particular keyword.
Additionally, you will be able to track those keywords by adding them to your list.
Overall, this page enables you to understand the details of your competitor’s ASA strategy.