Free ASO Tool
App Store Subtitle Counter
Count App Store subtitle characters, check the 30-character limit, and craft a stronger app subtitle before updating iOS metadata.
Apple says an app subtitle can be up to 30 characters long. This counter runs locally in your browser.
Characters
0/30
Remaining
30
Words
0
Status
Ready
Subtitle Checks
- Enter an app subtitle to see length, spacing, and clarity checks.
Count the App Store subtitle before submission
The App Store subtitle is a critical piece of metadata that expands on your app name. It appears right below the title in App Store search results and on your product page. Apple limits the subtitle to a maximum of 30 characters.
Like the title, the 30-character limit includes spaces and punctuation. This tool helps you quickly test the mechanical limit of phrases while drafting. It ensures you use the available space efficiently without exceeding Apple's technical limit, helping you avoid frustrating rejections when creating new versions in App Store Connect.
What the counter checks
| Check | Why it matters |
|---|---|
| 30-character limit | Apple says app subtitles can be up to 30 characters long. The text must be within this limit to be saved. |
| Unused room | The subtitle is heavily weighted in Apple's search algorithm. Leaving too much space means missing valuable keyword opportunities. |
| Whitespace | Leading, trailing, or double spaces consume valuable characters and can appear unpolished. |
| Generic terms | Terms like "app" or "free" provide low intent signal. Apple prefers subtitles that highlight actual value. |
| Word count | To remain impactful and readable on the App Store search results page, subtitles need to be concise. |
Subtitle, title, and keyword field work together
While the App Store title establishes your primary brand and top keyword, the subtitle acts as your secondary elevator pitch. It should carry related context and additional high-priority keywords that tell users *why* they should download your app. Terms that don't fit naturally in the subtitle should be moved to the keyword field.
For an optimal strategy, use RespectASO's Keyword Research Hub to compare opportunity scores. Place your strongest, most natural phrases in the title and subtitle, and relegate structural keywords to the hidden metadata limits.
Example subtitle patterns
| Example subtitle | Characters | Why it works |
|---|---|---|
| Focus, relax, and track sleep | 29 | Action-oriented and identifies multiple features accurately. |
| Log daily bills & spending | 27 | Simple phrasing covering common search terms. |
| Your 5K marathon coach | 22 | Addresses the user directly with specific intent. |
| Learn piano with chords | 23 | Clear outcome and method described concisely. |
Use this before deeper metadata checks
Once you are happy with the subtitle length, test your hidden keywords using the App Store Keyword Field Counter and your primary name with the App Store Title Character Counter.
Remember that text lengths change across languages. The subtitle limit remains 30 characters regardless of the market, which can be challenging for localized text. Review the Localization Hub to plan how to fit concepts tightly in different regions.
Verified from
- Apple product page guidance: subtitles have a maximum 30-character limit.
respectaso-pro/aso_pro/constraints.py: RespectASO Pro metadata validation enforces subtitle length strongly at 30 characters.
FAQ
Does this counter store my app subtitle?
No. The counter runs locally in your browser and does not send the subtitle to RespectASO.
Can I use the exact same words in the subtitle and keyword field?
You can, but it is not recommended. Apple's guidelines and ASO best practices indicate that terms in the title and subtitle are already indexed for search. Repeating them in the keyword field wastes valuable space.
Should I use all 30 characters?
It's generally helpful to use the space efficiently to include more indexable terms, but clarity and readability are more important than hitting exactly 30 characters.
Turn a tighter subtitle into stronger App Store metadata
Use the counter to fit the subtitle, then download RespectASO to research keyword popularity, difficulty, opportunity, competitors, and country-level demand before you ship metadata changes.