What is the App Store subtitle?

The subtitle is the 30-character line that appears directly beneath your app name on the App Store. It's indexed for search ranking and shown in search results, which makes it the highest-value 30 characters in your listing after the name itself.

The best subtitles contain keywords you genuinely want to rank for, without looking too alien to human eyes, because although they are small and gray, these subtitles are still visible to users.

Kickstart checks every localized subtitle for length, keyword overlap, and missed opportunities as part of its live ASO audit.