Impressionとは？

Impressions are the top of your ASO funnel. Before a user can visit your listing or download your app, they first need to see it. The number of impressions your app receives is a direct measure of its discoverability in the store.

Apple differentiates between "impressions" (your app appeared on screen) and "product page views" (a user tapped into your full listing). Google Play tracks "store listing visitors" as the equivalent of product page views. Understanding the gap between impressions and page views reveals your "tap-through rate" — how compelling your icon, title, subtitle, and first screenshot are at earning taps from search results.

Impression volume is influenced by your keyword rankings, category position, whether your app is featured, and seasonal factors. A spike in impressions without a corresponding increase in downloads may indicate that your listing is appearing for irrelevant keywords. Conversely, high impressions with low tap-through rates suggest your icon or title is not compelling enough. Monitor impression trends in App Store Connect or Google Play Console and correlate them with ranking changes to understand what is driving visibility.