What is ASO? App Store Optimization in 2026

What does ASO cover?

ASO covers two jobs: being found, and being chosen. Being found means showing up in store search, category charts and featured spots. Being chosen means turning the people who see your app into installs. A listing can fail at either: it can rank well and convert badly, or look great and never be seen.

Which fields does each store index for search?

The two stores index different fields, so the same app needs different text in each. This table separates what the stores document from what they do not.

Two details trip people up. Apple's help pages give the keyword field as 100 bytes, so letters like ç, ş, é or ß use more than one of your 100. And on Google Play there is no hidden field at all: everything you index is text people can read, which is why keyword stuffing there is both visible and a policy violation. Exact limits for every field are in the 30-step ASO checklist.

What affects an app's rank in store search?

Both stores publish the outline and keep the weights private. Apple writes that search results are based on "text relevance (matches for your app's title, subtitle, keywords, and primary category), as well as user behavior (downloads, ratings and reviews, and more)". Google writes that apps "are ranked based on a combination of ratings, reviews, downloads, and other factors".

The full breakdown, with a decision tree for sudden rank drops, is in How App Store and Google Play search ranking works.

How is ASO different from SEO?

ASO and SEO share the core idea: learn the words people use, then deserve the click. Three things differ. Store search has no links, so authority comes from installs and ratings instead. The space is tiny: 30 characters of title and, on the App Store, 30 of subtitle and 100 of keywords. And the result card shows your icon, rating and up to three screenshots right in the list, so design is part of ranking work: a better tap rate brings the downloads that both stores count.

How long does ASO take to work?

ASO has two clocks. The first is review: a text change on the App Store needs a submission, and Apple says it reviews at least 50% of submissions in under 24 hours and 90% in under 48 hours. Google Play changes also pass a review. The second clock is the ranking response. Positions usually settle over the following days, and the effect of a change on installs needs weeks of data to read. Change one thing at a time where you can, write down the date, and compare like with like: the same weekdays, the same country, the same keywords.

What is a practical ASO process? A 10-step checklist

1. List 30–50 searches that describe what your app does, in your users' words, separately for every country you care about. Keyword research shows how to do this with free data.
2. Measure popularity and difficulty for each search. Start with searches that are clearly relevant, have some popularity and are not owned by giants.
3. Write the title with your brand plus the single most valuable search, under 30 characters, without stuffing.
4. App Store: fill the subtitle and all 100 bytes of the keyword field. No word twice, no spaces after commas, no plurals of words you already have, no category names, no other apps' names.
5. Google Play: write a short description that carries your main search naturally, and use your important searches in the first lines of the long description, as a person would write them.
6. Pick the right category (and on Google Play up to 5 tags). See choosing a category and reading top charts.
7. Make the first three screenshots explain the core benefit, because they can appear in search results. Show the app in use: App Review wants more than half of the screenshots for each device to do that.
8. Earn ratings at the right moment, after a success inside the app, through the system prompts, never with a custom pop-up.
9. Localize the listing for every country that brings installs: keywords are searched differently in each language.
10. Track ranks daily and revise every release. Read rank changes against your own releases and your rivals' listing changes, drop searches nobody types and add the ones rivals win.

The long version, with a source and a field limit for each item, is the 30-step ASO checklist. Games have their own rules on screenshots, video and events: see ASO for mobile games.

Which ASO data is free?

You can do serious ASO with free data. Apple Ads shows a search popularity score from 1 to 5 for keywords you look up in a campaign. App Store Connect Analytics shows impressions, product page views and conversion by source, including App Store search. In Play Console, Grow users > Store performance > Conversion analysis can be broken down by search term, and the traffic sources separate brand searches ("Google Play search") from browsing and category searches ("Google Play explore").

Uptika adds free tools that need no account:

• Listing X-Ray reads any public listing and shows character use, how much of the store's own search suggestions the text covers, and rating strength against the category's top 10.
• Keyword Atlas measures one search in up to 10 countries on both stores: popularity, difficulty and the top 3 apps in each market.
• Metadata Linter checks your text against the limits and the common rejection risks before you submit.
• Chart Movers shows the climbers and new entrants in category charts.

What are the most common ASO mistakes?

• Writing a slogan in the title instead of the search people actually type.
• Repeating the same word in the name, subtitle and keyword field. Apple counts it once; the repeats are wasted space.
• Putting other apps' names or "best", "#1" and prices into metadata. Apple's guideline 2.3.7 and Google Play's metadata policy both forbid it.
• Translating the listing word for word instead of researching each country's searches.
• Judging a change after one day, or changing five things at once.
• Asking for ratings at first launch, before the app has earned one.

How do you measure ASO?

ASO is measured with daily keyword ranks per storefront (one store in one country), the popularity and difficulty of each keyword, a visibility index across your keywords, listing conversion and ratings. Uptika reads these every day and combines them into a 0–100 ASO score per storefront: the methodology shows every formula and weight, keyword rank tracking explains the readings, and the glossary defines each term.

Where does Uptika fit?

Uptika's ASO puanı (ASO score) turns the checklist above into numbers for your own app: it scores search visibility, keyword coverage, metadata use, competitive strength, ratings, freshness and localization, and lists the findings that cost you the most points. Kelime radarı (keyword radar) tracks your ranks every day, and Rakip günlüğü (competitor log) shows when a rival changes its title or screenshots. Start with the free tools above, or open a free account: 1 app, 1 storefront and 10 keywords tracked daily, no card needed.

Questions

Sources

1. App Store search (Apple Developer)
2. Creating your product page (Apple Developer)
3. Platform version information: keywords, promotional text, description (App Store Connect Help)
4. App information: name and subtitle (App Store Connect Help)
5. Categories and discoverability (Apple Developer)
6. Custom product pages (Apple Developer)
7. App Review (Apple Developer)
8. App Review Guidelines (Apple Developer)
9. Get discovered on Google Play search (Play Console Help)
10. Create and set up your app (Play Console Help)
11. Best practices for your store listing (Play Console Help)
12. Metadata policy (Play Console Help)
13. Add preview assets to showcase your app (Play Console Help)
14. Understand and grow your app's user base (Play Console Help)
15. Monitor your app's technical quality with Android vitals (Play Console Help)
16. Search popularity, Apple Ads glossary