# Keyword field packer

URL: https://storelift.net/tools/keyword-field
Language: en
Updated: 2026-09-12

The App Store's 100-character keyword field is the narrowest and most wasted piece of real estate in ASO. This tool takes your app's title, subtitle and target keywords and produces the string to paste into that field.

The packing follows Apple's indexing rules: title, subtitle and the keyword field are indexed together, so a word already in the title is never repeated in the field; keywords are recombined across fields, so phrases are split into words and de-duplicated; the separator is a comma with no space, because a space costs a character and buys nothing.

The calculation runs in your browser and the text you type is never sent to a server.

## Common questions

### Does what I type in the field reach you?

No. The packing runs in your browser and nothing you type is sent to a server. Handing an unreleased version's title and target keywords to an ASO tool can mean disclosing that version, so the calculation stays on the client.

### Should I repeat a word that is already in the title?

No. Apple indexes the title, subtitle and keyword field together, so repeating a word from the title only spends characters. The tool drops those duplicates for you.

### Comma or space between keywords?

A comma with no space. A space is a character and buys nothing in a 100-character field. Apple recombines words across fields, so phrases are unnecessary too: split them into words.

### Do I need my app name in the field?

No. The brand name is already in the title and indexed together with the field. Filling the field with it spends space reaching people who already know the name.

### Should I add singular and plural separately?

Usually no, but it depends on the language. Turkish is agglutinative and Apple does not stem it as well as English; if a critical term has two forms that matter, decide from measured rank rather than from a guess.

### How many characters should I use?

All of them. Staying under 100 means choosing to appear for fewer terms. The tool shows how full the field is; under 95% there is still room.