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App Store Search Algorithm
The proprietary ranking system used by Apple and Google to determine which apps appear in search results and in what order for any given keyword query.
The app store search algorithm is the system that decides which apps rank for which keywords. Neither Apple nor Google disclose the exact workings, but ASO practitioners have identified key signals through testing and analysis.
Known Ranking Factors
Apple App Store:
- App title and subtitle (highest text weight)
- Keyword field (high weight, hidden from users)
- Download velocity (recent download speed)
- Ratings and review volume
- Engagement metrics (retention, session data)
- Update recency
Google Play:
- App title (highest weight)
- Short description
- Full description (keyword presence and density)
- Download velocity
- Ratings, review volume, and review recency
- Engagement and retention signals
- Uninstall rate
Key Differences
Apple relies on explicit metadata fields (title, subtitle, keyword field) for text relevance. Google indexes a much larger body of text (full description) and applies deeper natural language processing.
Both algorithms weigh non-text signals like download velocity and engagement heavily, meaning metadata optimization alone will not secure strong rankings. You need a product that users genuinely want.
Algorithm Updates
Both stores update their algorithms periodically. These changes can cause sudden ranking shifts. Monitoring keyword rankings daily with tools like ASODOG helps you detect shifts early and adapt your strategy.