App Storeのアルゴリズムを解説

App store algorithms are the systems deciding which apps surface in search and browse. Their job: match users with the most relevant, high-quality apps.

If your app is not seen, it cannot be downloaded. Understanding the algorithm is what turns visibility into discovery and organic installs.

Keyword relevance is foundational: algorithms scan your title, subtitle, and description to learn what your app is about and which searches to rank it for.

Algorithms weigh raw downloads, but also download velocity: a sudden surge signals a trending app and can boost your ranking fast.

Ratings and reviews carry real weight. A high average star rating signals quality, positive sentiment shows satisfaction, and recent reviews prove an active base.

Downloads are not enough; algorithms track engagement: retention, how often users return, and uninstalls. Sticky apps rank higher.

Algorithms reward a solid experience: low crash rates, regular updates that show active maintenance, and support for the latest OS and devices.

The stores differ in emphasis: Apple leans on title, subtitle, and keyword field, while Google indexes the long description and weighs backlinks.

Algorithms evolve constantly to improve results and fight spam, so ASO is never done. Staying informed and adapting keeps your visibility up over time.

Which of these factors are generally considered by app store algorithms for ranking apps?

Recap: algorithms rank on keywords, downloads, ratings, engagement, and performance. Apple and Google differ slightly, and both keep changing.