App Store Keyword Field Optimizer (100 chars)

How to optimize your iOS app keywords

1. Enter your app name, subtitle and developer name for the same localization as your keywords, and pick your category.
2. Paste your candidate keywords, most important first. Commas, spaces, or line breaks all work.
3. Review the words removed and any that didn’t fit, then copy the result into App Store Connect.

The optimizer lowercases text, splits phrases into individual words, removes punctuation, and keeps the first occurrence of each word. It matches whole words, so “run” won’t remove “running.” Following Apple’s guidance, it also treats simple plurals (‑s, ‑es, ‑ies) as duplicates, drops broad terms like “app” and “game,” and drops words under three characters, which App Store Connect doesn’t accept. Those three rules are guesses: press Keep next to a word to put it back. Plural detection is built on English; check it in other languages.

Words enter the field in your order. When one doesn’t fit, the optimizer tries the next shorter ones and lists what was left out; it never cuts a word in half. Apple allows spaces within phrases; using single words here saves characters. The tool does not measure search volume, difficulty, or ranking potential.

How to research App Store keywords before filling the field

Start with what your app helps someone do. For a habit tracker, list the tasks, benefits, and use cases your users describe. Keep only terms that match features you actually offer.

Choose a target country and language, then use the ASO keyword research tool to compare demand signals, difficulty, and apps already ranking. Prioritize relevance first, then a realistic chance to compete. A broad, popular term can be harder to rank for than a specific one.

Put the clearest terms in your app name and subtitle, then use this field for additional words. Research each localization separately and track rankings after an update. The beginner’s ASO guide covers the wider workflow.

App Store keyword field example

For an app named Habit Tracker with the subtitle Build daily routines, a draft such as habit, daily, goals, goals, goal, streaks, reminders, app becomes goals,streaks,reminders: “habit” and “daily” are already indexed, “goal” repeats “goals,” and “app” is too broad. That leaves room for additional relevant keywords in App Store metadata.

Find the keyword field in App Store Connect

1. Open App Store Connect and select Apps → your app.
2. Under Distribution, select the iOS app version you’re preparing.
3. Choose the language, scroll below Description to Keywords, paste your list, and save.

Keywords belong to the localized version metadata. If editing is unavailable, check the app version’s status and your permissions. See Apple’s platform version reference and localization instructions.

Apple’s keyword guidance

Checked October 21, 2026. Sources: App Store search, creating your product page, and the App Store Connect keyword field reference. Apple’s search guide describes 100 characters; the Connect reference specifies 100 bytes and keywords longer than two characters. The optimizer fits the list in 100 characters and warns when it goes over 100 bytes, so you can validate localized lists in Connect.

Writing a launch checklist or an ASO tutorial? Link to this free optimizer so readers can clean up their own keyword field.