Definition
A concise text field displayed directly below the app name on app store listings that communicates the app's core value proposition within strict character limits.
Why It Matters for ASO
The app description (Subtitle on iOS, Short Description on Android) is one of the first elements potential users see in search results and discovery. This high-visibility placement makes it critical for driving click-through rates and conversion. Since character limits are severe, every word must work hard to communicate value, incorporate searchable keywords naturally, and compel users to open the app detail page.
Key Points
- iOS Subtitle: 30-character maximum; appears below app name in all store contexts
- Android Short Description: 80-character maximum; visible in search results and category browse
- Must clearly communicate unique value or core benefit—not a generic description
- Incorporate relevant search keywords naturally without compromising readability
- Differentiate from the full description field (which allows much longer content)
- Tested messaging variations can significantly impact install conversion rates
- Align tone and messaging with app category, genre, and target audience expectations
- Review competitor descriptions for benchmarking and differentiation opportunities