App Description Counter
Track your App Store description length against the 4,000-character limit.
Apple gives you up to 4,000 characters for the App Store description — but unlike Google Play, Apple does not index a word of it for search rankings. That single fact should reshape how you write it: the iOS description is a pure conversion asset, read by users who already found you, not a keyword vehicle.
Paste your draft above to check the length. Most visitors only ever see the first three lines before the “more” link, so the counter matters less than what you do with the opening 150 characters — though staying under 4,000 is still a hard requirement for submission.
How to structure an App Store description
- 1
Paste your description into the field above and confirm it is under 4,000 characters.
- 2
Front-load the first three lines — that is all users see before tapping “more”, so lead with your strongest value proposition.
- 3
Break the body into short paragraphs or bullet-style lines; dense walls of text kill readability on a phone screen.
- 4
Skip keyword stuffing — Apple does not index the description, so write for humans and save keywords for the name, subtitle, and keyword field.
- 5
End with social proof or awards, and re-check the count after every revision.
Why the iOS description is a conversion field, not a ranking field
Apple’s search algorithm indexes the app name, subtitle, and the hidden 100-character keyword field — the description is excluded. Repeating “photo editor” fifteen times in an iOS description earns exactly nothing in search. This is the sharpest platform difference in ASO, because on Google Play the long description is a primary keyword surface with real ranking weight.
What the iOS description does influence is the decision to download. Visitors who scroll past your screenshots are high-intent but unconvinced; the description’s job is to close them with concrete benefits, feature specifics, and credibility markers. It also feeds other surfaces — snippets of it can appear when your app is featured or shared — so sloppy copy leaks into places you do not control.
One more catch: you can’t edit it whenever you want
The description only updates when you submit a new app version through App Review. If you find a typo — or your pricing copy goes stale — you wait for the next release. This is why time-sensitive messaging belongs in promotional text (editable anytime, 170 characters) and the description should stick to durable claims that will still be true in three months.
On length: using all 4,000 characters is not a goal in itself. Analyses of top-charting iOS apps consistently show descriptions between roughly 1,500 and 3,000 characters, structured with short paragraphs, feature lists, and a closing call to action. Past the first screen, completeness matters more to the few users who read that far — and to App Review, which checks that claims match the app.
Frequently asked questions
What is the App Store description character limit?
The description can be up to 4,000 characters per localization. There is no minimum, but App Review expects it to accurately describe the app’s functionality.
Does Apple index the description for search?
No. Keywords in an iOS description have no effect on App Store search rankings — indexing is limited to the app name, subtitle, and the 100-character keyword field. This is the opposite of Google Play, where the full description is indexed.
Can I update my description without releasing a new version?
No. The description is locked between releases and can only change when a new app version is submitted for review. For copy you need to change quickly, use promotional text — its 170 characters are editable at any time without review.
How much of the description do users actually see?
About three lines on the product page before the “more” link — roughly 150–170 characters depending on device. The overwhelming majority of visitors never expand it, which is why the opening sentence carries most of the field’s conversion weight.
How long should my description actually be?
Long enough to cover your core benefits, key features, and credibility — typically 1,500–3,000 characters works well. Padding to the full 4,000 adds nothing on iOS since the text is not indexed; clarity and a strong opening beat raw length.
Generate descriptions that sell in every language
Appalize’s AI metadata generation drafts conversion-focused descriptions from your feature list, localizes them across storefronts, and syncs the result to App Store Connect from the ASO Editor.
Related free tools
Google Play Description Counter
Balance length and keyword density in your 4,000-character Play description.
Promotional Text Counter
Keep your App Store promotional text within the 170-character limit.
Description Formatter
Preview how your description’s line breaks, bullets, and emoji actually render on the stores.
Keyword Density Checker
Analyze keyword frequency in any app description and spot over-optimization.