iOS search ranks apps from the title, subtitle and a hidden 100-character keyword field, not from a long Play-style description dump. The free ToolXoX App Store Keywords tool takes an app seed, lets you Choose Country across about 91 markets, runs Analyze, and returns App Store suggestions so you can place the strongest phrase in the title, a secondary one in the subtitle, and the rest in the keyword field.
When App Store Keywords Fits
Use it when an iPhone or iPad listing needs Apple search language for a specific country. Common jobs:
- New app launches before you lock title, subtitle and keywords.
- ASO refreshes when installs stall in one locale.
- Category moves when the app adds a major feature.
- Competitor phrase checks for how users name the job in that country.
Apple indexes the title, subtitle and keyword field together, so repeating the same word across them wastes limited space. Autocomplete shows the job and category phrases users type on the App Store in each country, which is what belongs in those three slots.
What You Get on App Store Keywords
On the tool page you type an app-related seed in the Type Keyword field (example: photo editing app), Choose Country from about 91 markets, complete the security check when it appears, click Analyze, then review the suggestions. It's free and needs no sign-up. It works on phone and computer.
Expect short head terms and longer job phrases. Rank them by how closely they match the app you ship, then assign one primary to the title, one secondary to the subtitle, and unique singular words to the 100-character keyword field.
How to Research App Store Keywords
1. Write the job users type, such as photo editing app, habit tracker or expense split.
2. Open the App Store Keywords tool on ToolXoX on your phone or computer.
3. Enter that seed in Type Keyword, Choose Country for the App Store territory you ship first, and complete the security check if shown.
4. Click Analyze and sort suggestions into title, subtitle and keyword-field candidates.
5. Put the strongest phrase in the title, a different secondary in the subtitle, and fill the 100-character keyword field with the remaining singular words separated by commas without spaces.
Title, Subtitle and Keyword Field
Don't repeat a word across title, subtitle and the keyword field. Apple already sees each token once.
- Title: strongest primary keyword plus the app name if space allows.
- Subtitle: a different secondary benefit or job phrase.
- Keyword field (100 characters): singular words, commas, no spaces after commas, no repeats from title or subtitle.
Refresh the keyword field when you ship a major feature instead of stacking outdated synonyms. Keep brand spelling identical so search does not split traffic.
ASO Tips
- Research each App Store country you localise into.
- Use singular forms only in the keyword field.
- Separate tokens with commas and no spaces inside the 100-character limit.
- Leave title and subtitle words out of the keyword field.
- Re-run Analyze after a category or feature shift.
Conclusion
Analyze a real iOS job seed for the country you care about, then split the results across Apple's three indexed fields without repeats: primary in the title, secondary in the subtitle, and unique singular tokens in the 100-character keyword field. Set it up once per country and your app shows up for far more of the searches that lead to installs.
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