ASO Score

A free 0–100 grade of how well any iOS app's store listing is optimized — title keyword use, description quality, screenshot gallery, ratings health, update freshness and localization — with an itemized list of exactly what to fix, in priority order.

How the score works

Six weighted components from public App Store data: Title keyword usage (20), Description quality (15), Screenshots & device support (20), Ratings health (20), Update freshness (15) and Localization (10). A component Apple's API returned no data for is marked "not scored" and the total is rescaled over what was measured — a missing field is a gap in the response, never counted against the app. Apple doesn't expose the subtitle or hidden keyword field publicly, so grade those yourself with the metadata checker and ASO checklist.

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About this tool

What is an ASO score, and what does this one grade?

This grades a live App Store listing out of 100 across the parts of it that are publicly observable — the app name, subtitle, description, screenshot gallery, ratings health, update recency and localization — and returns a specific fix for each deduction rather than a number on its own.

It works on any app, so it is as useful pointed at a competitor as at your own listing.

How it works
  1. 1Pick an app. Its live listing is fetched from Apple.
  2. 2Each component is checked against what Apple actually allows and what the listing actually uses — character budgets spent, screenshot count, whether the description opens with something worth reading.
  3. 3Every deduction comes with the change that would remove it.
  4. 4The total is the sum of the components, all of which are shown, so you can see exactly where the number came from.
What it cannot tell you
  • A score is a summary of observable listing hygiene, not a prediction of installs. Nothing here can see your conversion rate — that is in App Store Connect.
  • It cannot read your keyword field. Apple does not expose it, so keyword scoring is based on the name and subtitle, which are public.
  • A perfect score does not mean the product is right for the market. It means the listing is using what Apple gives it.
Questions

Is a high ASO score a guarantee of more downloads?

No. It means the listing is spending its character budgets, screenshot slots and localizations properly. Whether the app is something people want is a separate question no listing audit can answer.

Can I score a competitor’s app?

Yes. Everything the score reads is public, so it works on any App Store listing.

Why is my score lower than I expected?

Open the component breakdown — the total is just the sum of its parts, and each deduction names the exact change that would remove it.

Keywords & rankings

Keyword researchApple's own autocomplete, expanded and scored by live ranking difficulty.App Store keyword toolEvery term an app ranks for, pulled from live search results.Keyword rank checkerWhere an app sits for any keyword, in any of 175+ storefronts.Daily rank trackingFlag keywords and get a daily snapshot, with 7/30/90-day history and movement.Keyword gapTerms a competitor ranks for and you do not, from live search.Keyword cannibalizationTerms where two of your own apps land in the same result.

Or browse every free App Store optimization tool.