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App Store character counter
Live character and UTF-8 byte counts for every Apple App Store metadata field. Title and subtitle each cap at 30 characters, the keyword field at 100 bytes, promotional text at 170 characters, and the description at 4,000 characters.
Runs entirely in your browser. Nothing you type leaves the page. No signup. Free forever.
Counter
Bold name on the product page. Apple App Store + Google Play limit: 30 characters.
Appears under the title in search and on the product page. Limit: 30 characters.
Comma-separated, no spaces. UTF-8 byte limit: 100 bytes. CJK/emoji characters count for more than one byte.
Editable without resubmitting your app. Useful for sales, events, launch hooks. Limit: 170 characters.
First 2-3 lines show before the 'more' fold. Front-load the strongest value proposition. Limit: 4,000 characters.
Featured product
AppGrowKit writes the title, subtitle, and keywords for you.
Paste any App Store URL and AppGrowKit fetches live ranks, demand, and competitor copy — then drafts an ASO-optimized title, subtitle, and 100-byte keyword field that fits these limits on the first try. Free to start.
Why these limits exist
Apple's metadata limits in 2026
Title — 30 characters
Truncated past 30 in search results. Used heavily for ranking; place the strongest keyword phrase here.
Subtitle — 30 characters
Searchable, treated like a secondary keyword field. Use it to capture intent your title can't fit.
Keyword field — 100 bytes
Hidden field, separate from title and subtitle. UTF-8 encoded. Comma-separated, no spaces. Localized per language.
Promotional text — 170 characters
Updateable without resubmitting. Use for sales, launch hooks, or time-sensitive announcements.
Description — 4,000 characters
Most users only see the first 2-3 lines. The rest is for users who tap 'more' or for App Store search indexing.
Per-locale limits
Every metadata limit applies per locale. A 30-character German title is harder than a 30-character English one.
Tips that actually help conversion
What to put in each field
Title: brand name + one strong keyword phrase. Example pattern: "Brandname — primary keyword". Avoid stuffing — Apple flags spammy patterns and may reject the listing.
Subtitle: use for the second-strongest keyword phrase or a benefit clause your title can't fit. Subtitles are searchable; treat them as a 30-character keyword opportunity.
Keyword field: comma-separated singular forms, no spaces, no duplicates of words already in title or subtitle. Apple matches partial words, so "screenshot" already covers "screenshots" in search.
Promotional text: front-load with the time-sensitive hook. This is the only field you can update without a binary submission, so use it for launch promos, version highlights, or seasonal campaigns.
Description: first three lines do 80% of the work. Lead with what the user gets, then list features in scannable bullets. The remaining 3,500 characters are for App Store search indexing more than human readers.
FAQ
Quick answers
- What is the App Store title character limit?
- Apple App Store limits the app title (the bold name on your product page) to 30 characters. The same 30-character limit applies on Google Play. Going over the limit prevents the listing from saving in App Store Connect.
- What is the App Store keyword field byte limit?
- The App Store keyword field accepts 100 bytes (not 100 characters). For plain ASCII English keywords, 100 bytes equals 100 characters. For Chinese, Japanese, Korean, Arabic, or emoji, each character can take 2-4 bytes in UTF-8 encoding, so the practical character count is much lower. This counter measures real UTF-8 bytes.
- What is the App Store subtitle character limit?
- App Store subtitles are limited to 30 characters. Subtitles appear directly under the app title in App Store search results and on the product page, and are searchable like the title field for keywords.
- What is the maximum length for App Store promotional text?
- Promotional text on Apple App Store is limited to 170 characters. Unlike the description, promotional text can be updated without submitting a new app version, making it useful for sales, events, and time-sensitive launches.
- How long can the App Store app description be?
- Apple App Store accepts up to 4,000 characters in the app description. Most users only see the first 2-3 lines before the 'more' fold, so front-load the description with the strongest value proposition.
- Does AppGrowKit store my input?
- No. This counter runs entirely in your browser. Nothing you type is sent to a server, saved, or logged. Refresh the page and everything is gone.
Once the copy fits, ship the screenshots
AppGrowKit generates App Store-ready iPhone and iPad screenshot sets from raw app screens, with AI-written headlines tuned for App Store browsers. Free to start with 5 credits on signup.
More free tools: app icon generator, screenshot resizer. Related guides: App Store screenshots guide, screenshot size reference.