ASO

How do you run an App Store Optimization audit?

An ASO audit is a structured review of your app's store listing: title and subtitle, keywords, screenshots and previews, ratings and reviews, and the conversion rate from impression to install. You check each element against the platform's official limits and policies, then against your own store analytics, and fix the biggest gaps first.

Phone outline showing an app store listing with checkmarks next to the title, screenshots and rating.

An App Store Optimization (ASO) audit is a review of every element of your app's store listing that affects whether people find it in store search and whether they install it once they see it. In practice you check five things in order: title and subtitle, keywords, screenshots and previews, ratings and reviews, and conversion from impression to download, each measured against Apple's and Google's official limits and your own store analytics.

Most listings we review do not need a rebuild. They need a title that wastes fewer characters, a keyword field with no duplicates, first screenshots that state the benefit, and a plan for ratings. This guide gives you the checks, the official limits and a scorecard you can reuse every quarter.

Key takeaways

  • Start with data: impressions, product page views and conversion rate by source tell you whether you have a discovery problem or a conversion problem.
  • Use every character with intent: app name and subtitle are 30 characters each on the App Store; Google Play allows a 30 character name and an 80 character short description.
  • The App Store keyword field is 100 characters, commas, no spaces, no repeats of words already in your name.
  • Screenshots sell: up to 10 on the App Store; lead with the outcome, not the menu.
  • Ratings are a system, not luck: prompt at the right moment, within Apple's limit of three prompts per 365 days, and reply to reviews.

What do you need before you start an ASO audit?

Open your store analytics before you open the listing. App Store Connect and Google Play Console both report how many people saw your app, how many visited the product page and how many installed. Export at least the last 90 days and split by traffic source (search, browse, referral, ads) and by country.

SignalWhat it suggestsWhere to focus
Low impressions from searchDiscovery problem: you do not rank for the terms people useTitle, subtitle or short description, keywords
Healthy impressions, low page viewsYour search result does not earn the tapIcon, name, first screenshots, rating
Page views but low installsThe product page does not convinceScreenshots, preview video, description, reviews
Good overall rate, weak in one countryLocalization gapLocalized metadata and screenshots

Also list your top five competitors for your main search terms and screenshot their listings. An audit is relative: your listing competes on the same results screen as theirs.

How do you audit the app title and subtitle?

Your name is the strongest text field for store search on both platforms, and the one users read first. Check it against the official limits:

FieldApp StoreGoogle Play
App nameUp to 30 charactersUp to 30 characters
Subtitle or short descriptionSubtitle, up to 30 charactersShort description, up to 80 characters
KeywordsKeyword field, 100 charactersNo separate keyword field
Promotional textUp to 170 characters, above the descriptionNot applicable
Full descriptionLong descriptionUp to 4,000 characters

Limits from Apple Developer "Creating your product page" and Play Console Help, checked November 10, 2026. Apple's product page guide states the keyword limit in characters; App Store Connect Help describes it in bytes, which matters for non-Latin scripts.

Audit questions:

Writing for a 30 character limit is close to writing a search result title. Our guide to writing meta titles and descriptions uses the same principles. If the audit shows the name and subtitle need new terms, our guide to choosing App Store title and subtitle keywords covers research and scoring.

How do you audit App Store keywords?

Apple's product page guide says keywords "are limited to 100 characters total, with terms separated by commas and no spaces." Because the name and subtitle are already searchable, every character spent repeating them in the keyword field is wasted.

  1. Remove duplicates. Delete any word that already appears in your name or subtitle, and any word repeated within the field.
  2. Remove spaces after commas. They cost characters and add nothing.
  3. Prefer single words that combine. "budget,planner,expense" covers more combinations than one long phrase.
  4. Drop terms you cannot win. If the top results for a term are household names with millions of ratings, a more specific term is a better use of space.
  5. Check relevance honestly. Terms that describe something your app does not do bring installs that churn and reviews that hurt.

On Google Play there is no keyword field, so your search terms need to appear naturally in the name, short description and full description. Write the full description for people first, with the main terms in the opening lines, not repeated lists. For finding the terms themselves, the methods in our guide to keyword research with zero authority work for apps too: look for specific, lower competition phrases you can realistically rank for.

How do you audit screenshots and preview videos?

Apple lets you feature up to 10 screenshots and up to three app previews of up to 30 seconds on a product page. Most people never swipe to the end, so the audit focuses on the first few images.

How do you audit ratings and reviews?

Ratings appear in search results and on the product page, so they affect both taps and installs. Apple's guidance says you can prompt for ratings "up to three times in a 365-day period," which makes timing important.

  1. Check your average and its trend by country and by app version. A drop after a release usually points to a bug, not a marketing problem.
  2. Read the last 100 reviews and tag them by theme: bugs, missing features, pricing, praise. The top negative theme is your highest leverage fix.
  3. Review your prompt moment. Ask after a success, such as completing a task, not at launch or mid-task.
  4. Reply to reviews, especially negative ones that describe fixed problems. Replies show active support to future visitors.
  5. Never incentivize or fake reviews. Both stores prohibit manipulating ratings, and it puts the listing at risk.

Check how AI assistants describe your app

More people now ask ChatGPT and Gemini which app to download. A free Klepha report shows whether your app is recommended and which competitors are named instead.

Get my free report

How do you check store conversion?

Conversion is where the audit pays off. Compare product page conversion rate (installs divided by product page views) across traffic sources and countries. Then test changes rather than guessing.

What policy checks belong in an ASO audit?

A listing that breaks store rules can be rejected or removed, which costs more than any ranking gain. Google Play's metadata policy summary says not to use emojis, emoticons or repeated special characters in metadata, to avoid ALL CAPS unless it is part of your brand name, and not to use text in the title, icon or developer name that indicates store performance or ranking, price or promotional information. Titles such as "#1 Best Free Budget App" fail that check. Apple reviews metadata as part of app review too, so keep claims accurate on both stores.

What does a complete ASO audit scorecard look like?

AreaCheckStatus
Data90 days of impressions, page views, installs by source and countryPass / Fix
NameBrand plus one descriptive phrase, within 30 charactersPass / Fix
Subtitle / short descriptionStates a benefit, no repetitionPass / Fix
Keywords (App Store)No duplicates, no spaces, relevant and winnablePass / Fix
DescriptionMain terms early, written for peoplePass / Fix
ScreenshotsFirst image states the benefit; current UI; localizedPass / Fix
Preview videoProduct visible in the first secondsPass / Fix
RatingsStable or rising; prompt after a success; replies to reviewsPass / Fix
ConversionTests running; ads land on matching pagesPass / Fix
PolicyNo ranking claims, emojis or promo text in metadataPass / Fix

Run the full audit each quarter and a quick check after every major release. ASO sits beside SEO and GEO rather than replacing them; our explainer on SEO vs GEO vs ASO shows how they overlap. If you want help, our solutions, expertise page and case studies explain how we work.

Sources

Frequently asked questions

What is an ASO audit?

An ASO audit is a structured review of an app's store listing, covering title and subtitle, keywords, screenshots and previews, ratings and reviews, and the conversion rate from impression to install, measured against store limits, policies and your own analytics.

How long can an app title be?

On the App Store an app name can be up to 30 characters, and the subtitle another 30. On Google Play the app name is limited to 30 characters and the short description to 80.

How many keywords can I add on the App Store?

Apple's keyword field is limited to 100 characters in total, with terms separated by commas and no spaces. Avoid repeating words that already appear in your app name or subtitle.

Does Google Play have a keyword field?

No. Google Play has no separate keyword field, so the terms you want to be found for should appear naturally in the app name, short description and full description.

How many screenshots should an app have?

Apple allows up to 10 screenshots and up to three app previews of up to 30 seconds. The first few images matter most, so lead with the main benefit rather than using every slot for minor features.

How often should I run an ASO audit?

Run a full audit every quarter and a quick review after each major release, since releases, competitor changes and new store features can shift rankings and conversion.

Garry Charter

SEO Specialist · Klepha

Twelve years in search, covering technical SEO, keyword research and, since generative search arrived, answer engine and generative engine optimization. Writes Klepha's guides on ranking in Google and being cited by AI assistants.