App Store keyword field checker
Paste your app name, subtitle and 100-character keyword field. You get the character and byte counts, every wasted word, and a cleaned version ready to paste into App Store Connect. Nothing leaves your browser.
Cleaned keyword field
How to use the checker
- Paste the app name and subtitle exactly as they are in App Store Connect for one localization.
- Paste the keyword field of the same localization.
- Optionally add your developer name, so words from it are flagged too.
- Fix what the checker flags, or copy the cleaned field and fill the free characters with new words.
Everything runs in your browser. Nothing you type is sent anywhere; your last entry is kept in your browser's local storage so it's there when you come back.
What the checker looks for
| Check | Why it matters |
|---|---|
| Character and byte count | Apple's search page says 100 characters; the App Store Connect reference says 100 bytes. Accented and non-Latin characters take 2–3 bytes each. |
| Words already in the app name or subtitle | Apple: "Don't repeat any words included in your app name, subtitle, or category." They are indexed already. |
| Repeated words | A word counts once, however often it appears. |
| Plural and singular pairs | Apple lists plurals of words you already have as duplicates. Keep one form. |
| Spaces after commas | Apple's format is "terms separated by commas and no spaces". |
| Generic and filler words | Apple advises against generic terms like "app" and filler words like "the". |
| Developer name words | Your developer name is searchable already. |
| Words of two characters or fewer | App Store Connect requires each keyword to be longer than two characters. |
The checker treats words, not phrases: the App Store combines single words across your name, subtitle and keyword field, so weight lifting and weight,lifting cover the same searches. It can't know which words people actually search for. For that you need search popularity data from Apple Ads, and rank tracking to see which searches you can win. The full background is in our guide to the App Store keyword field.
Frequently asked questions
How long can the App Store keyword field be?
100 characters per localization. Apple's App Store Connect reference says 100 bytes, which is the same for plain English text. Languages with accented or non-Latin characters fit fewer characters into 100 bytes.
Does the checker work for languages other than English?
Yes. It counts characters and UTF-8 bytes for any language and finds repeated words in any script. The plural check only understands English endings like -s and -ies.
Is my keyword data stored or sent anywhere?
No. The checker runs entirely in your browser. Your last entry is saved only in your own browser's local storage.
Should I use every one of the 100 characters?
Yes, with relevant words. Unused characters are free ranking chances. Fill them with distinct words that describe what your app does and that people search for.
Keep reading
Guide · October 27, 2026The App Store keyword field: how the 100 characters actually workA practical guide to the iOS keyword field: what the App Store indexes, the 100-character limit (and when it is bytes), comma rules, word combinations, what not to include, and how to measure a change.
Guide · October 27, 2026Apple Ads search popularity, explained: what the 1–100 score means for your App Store keywordsApple's search popularity score is the only first-party measure of App Store search demand. What the 1–100 and 1–5 values mean, why most keywords have no score, what we see in 66 weeks of US data, and how to use it to pick keywords.
Guide · October 27, 2026App Store cross-localization: more keyword space in every countryMost App Store countries index more than one localization of your app. Here is which ones, how to use the extra keyword fields safely, and the mistakes that waste them.