Free ASO Tool
Generate keyword-optimized subtitles that fit the character limit and boost your app's search ranking.
Last updated: March 10, 2026
Subtitles that naturally incorporate your target keywords for better search ranking
Every option stays within the iOS 30-char or Android 80-char limit
Generate for App Store, Google Play, or both platforms at once
Provide your app name and a brief description of what it does
List the keywords you want to rank for in the app store
Receive multiple options with keyword analysis and character counts
The App Store Subtitle Optimizer is a free ASO tool that generates keyword-optimized subtitles within each platform's character limit: 30 characters for iOS App Store subtitles and 80 characters for Google Play short descriptions. The subtitle is fully indexed by Apple for search, so the tool front-loads target keywords while avoiding duplicates from your app name (Apple indexes both fields, so repeats waste characters).
Everything you need to optimize your app store presence
No account required • Your data is not stored
The App Store subtitle is the short text that appears directly below your app name on iOS. It's limited to 30 characters and is fully indexed by Apple for search. A well-optimized subtitle can significantly improve your app's discoverability for target keywords.
iOS App Store subtitles are limited to 30 characters. Google Play short descriptions allow up to 80 characters. This tool generates options that stay within the correct limit for each platform.
Pick a subtitle that naturally includes your most important keyword, communicates your core value in minimal words, and complements your app name without repeating words. Front-load important keywords since Apple indexes the subtitle for search.
Yes, this tool is completely free. No account or sign-up required. Enter your app details and get optimized subtitle options instantly.
Yes. Select "Both" as the platform option and the tool generates subtitle options for iOS App Store (30 chars) and Google Play short descriptions (80 chars) in a single request.
No. Apple indexes both your app name and subtitle, so repeating keywords wastes characters. Use the subtitle to target additional keywords that don't appear in your app name.
Pair it with professional App Store screenshots. Describe your app and get finished screenshots in seconds.
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