App store optimization services: what a real ASO engagement covers (and what it can't do)

ASO makes every other channel cheaper by turning more product page visits into installs. Here's what a proper engagement covers on both stores, and what it can't promise.

App store optimization is the cheapest growth channel most apps underuse. Every visitor who lands on your product page, whether from search, browse, a paid ad or a link, sees the same icon, screenshots and copy. Improve how well that page converts and every other channel gets cheaper. That's the real job of app store optimization services: more organic installs and a better conversion rate on the traffic you already pay for.

This guide explains what a proper ASO engagement covers on the App Store and Google Play, how the two stores differ, what ASO can't do, and how to judge whether an ASO provider is worth hiring.

What ASO actually covers

ASO has two halves, and a good service works on both:

• Visibility: ranking for the searches your future users actually type. This is driven by your metadata (text fields) and by user behavior such as downloads and ratings.
• Conversion: turning product page views into installs. This is driven by your icon, screenshots, preview video, ratings and the first lines of your description.

Most teams over-invest in the first half and neglect the second. A page that converts poorly wastes rankings and ad spend alike.

App Store vs Google Play: how the levers differ

The stores index different fields and offer different testing tools, so one set of copy pasted into both listings leaves results on the table.

Apple's own App Store search guidance says results are based on text relevance (title, subtitle, keywords and primary category) and user behavior such as downloads, ratings and reviews. It also notes that promotional text does not affect search ranking, so don't waste it on keywords.

Keyword research: the foundation

Good keyword research is about intent and winnability, not just volume. A useful process:

1. Seed list. Collect the terms your users, support tickets, reviews and competitors use. Users rarely search the way your marketing team talks.
2. Expand. Use an ASO tool (AppTweak, Sensor Tower, data.ai, MobileAction or similar) and Apple Search Ads (rebranded by Apple as Apple Ads in 2025) search popularity data to find related terms.
3. Score. For each term, judge relevance to your app, search popularity and difficulty (how strong the apps ranking above you are).
4. Prioritize. Target a few high-relevance terms you can realistically rank for now, then expand as your install volume and ratings grow.
5. Localize. Translate intent, not words. Research each priority market separately, including US Spanish if that audience matters to you.

On iOS, avoid repeating words already in your name or subtitle in the keyword field, skip generic filler terms like "app," and use singular forms to save characters. On Google Play, write the full description for humans first and work the priority terms in naturally. Stuffing reads badly and can breach Play's metadata policy.

Space is tight on both stores. Apple gives you 30 characters each for the name and subtitle; Google Play gives you 30 for the title, 80 for the short description and 4,000 for the full description. A practical rule: put your single most important term in the name or title, your second cluster in the subtitle or short description, and write the rest so that a person skimming on a phone understands what the app does in one glance. Revisit the map every month or two, because rankings shift as competitors update their own listings.

Creative: where conversion is won

Most people decide from the first two or three screenshots without scrolling. Treat them as ads, not as documentation.

• Lead with the outcome. The first screenshot should state the main benefit in a few words, with the UI as proof.
• One message per screenshot. Each frame answers one question a hesitant user has.
• Design for small sizes. Captions must be legible in search results on a phone, not just on a desktop monitor.
• Use video where it explains something. A preview video helps when the value is hard to show in a still, such as a game mechanic or an editing tool.
• Icon matters more than you think. It appears everywhere, including search results and the home screen. Test it.

Ratings, reviews and testing

Ratings and reviews

Ratings influence both ranking and conversion. Ask at the right moment: after a user completes something valuable, never on first launch or right after an error. Both stores provide native prompts that the system limits, so don't burn them early. Reply to negative reviews with specifics, and when a fix ships, say so in the reply.

A/B testing on both stores

Google Play's store listing experiments let you test up to two variants against your current listing, with one default graphics experiment or up to five localized experiments running at once. Apple's product page optimization lets you test alternative icons, screenshots and previews against your original page.

Rules that keep tests honest:

• Test one asset at a time, so you know what caused the change.
• Let tests run until they reach the confidence level you set, even if early results look exciting.
• Test big differences first (a new concept, a different first screenshot), not small color tweaks.
• Remember that store tests measure install conversion, not retention. Check that a winning variant doesn't attract users who churn faster.

Apple's custom product pages add another lever: up to 70 alternative pages with their own screenshots, promotional text and previews, which you can link from ads or assign to specific keywords so they appear in search for those terms. Pair these with Apple Search Ads campaigns to match each ad group to a page built for that intent.

What ASO can and can't do

Be wary of any app store optimization service that promises a specific ranking. Here's what's realistic:

ASO compounds with paid growth: paid installs and good ratings lift rankings, and a stronger product page makes paid installs cheaper. That's why we treat it as part of a launch plan, not a separate project.

How to evaluate app store optimization services

Ask a provider these questions before you sign:

• What's in the first 30 days? Expect an audit of both listings, a keyword map, competitor review and a creative brief, not just "ongoing optimization."
• How will you measure success? Good answers cover keyword rankings for agreed terms, product page conversion rate, organic installs and ratings, tracked in App Store Connect and Play Console.
• Do you design creatives, or only write copy? Conversion work needs design.
• How often will you test and update? A sensible rhythm is a metadata review roughly every month or two and a steady sequence of creative tests.
• Do you work with our paid campaigns? ASO and paid UA should share learnings and custom pages.
• What access do you need? Ask to be added as a user in App Store Connect and Play Console with appropriate roles; never share passwords.

Pricing is typically a one-off audit and setup fee, a monthly retainer, or both, with creative production sometimes priced separately. Compare scopes, not just prices.

Where Appryze fits

We handle ASO as part of app launches: keyword research, metadata, screenshots and store testing on both stores, alongside paid campaigns on Google, Meta and Apple Search Ads. Every app we build includes free store submission and one month of launch marketing. See the Growth page for how we work, or our guide to choosing a mobile app marketing agency.

Frequently asked questions

What do app store optimization services include?

A full service covers keyword research, metadata for the App Store and Google Play, screenshot and preview video design, icon testing, ratings and review strategy, and A/B tests using each store's native tools. It should also include reporting on keyword rankings, product page conversion rate and organic installs, plus coordination with paid campaigns.

How long does ASO take to show results?

Conversion improvements from new screenshots or icons can show up within weeks once a store test reaches confidence. Ranking changes from metadata updates usually take longer and depend on your install volume, ratings and competition. Plan on several months of steady work, with metadata reviews roughly every month or two.

Is ASO different for iOS and Android?

Yes. Apple indexes the app name, subtitle, a hidden 100-character keyword field and the primary category, and doesn't use the description for ranking. Google Play has no keyword field and indexes the title, short description and full description. Testing tools and audience-specific page options also differ between the two stores.

Can an ASO agency guarantee top rankings?

No. Store ranking algorithms aren't public, they change, and they weigh user behavior such as downloads and ratings that no agency fully controls. A credible provider commits to a process, agreed target keywords, regular testing and transparent reporting, not to a ranking position.

Is ASO worth it if I'm already running paid ads?

Usually, yes. Paid ad users often land on your store page before installing, so a better-converting page lowers your cost per install across channels. Paid installs and good ratings can also lift organic rankings, which makes ASO and paid acquisition reinforce each other.

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