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ASO delivery models · App Store and Google Play

ASO agency vs in-house vs tools for apps in 20+ markets

In-house wins for one core app, tools for data, a partner for 20+ markets.

Last verified 4 November 2026Published by Admiral Media, model five of fiveNo other agencies or tools named, no prices

  • 4.9 on Clutch from 48 reviews
  • €500M+ ad spend managed
  • 150+ brands grown since 2019
Where each model usually fitsRule of thumb
Which ASO delivery model usually fits, by number of apps and live store-locales
Live store-locales
AppsUnder 1010 to 1920 or more
1 app1 app, under 10: 02In-house plus a tool1 app, 10 to 19: 02 + 03In-house plus a tool, with freelancers1 app, 20 or more: 01 or 05In-house team or a portfolio partner
2 to 4 apps2 to 4 apps, under 10: 02 or 04In-house plus a tool, or a single-market agency2 to 4 apps, 10 to 19: 05Portfolio partner with your lead2 to 4 apps, 20 or more: 05Portfolio partner with your lead
5 or more apps5 or more apps, under 10: 01In-house team5 or more apps, 10 to 19: 05Portfolio partner with your lead5 or more apps, 20 or more: 05Portfolio partner with your lead
  • 01 In-house team
  • 02 In-house plus a tool
  • 03 Freelancers
  • 04 Single-market agency
  • 05 Portfolio partner
Rule of thumb from our portfolio work, an illustration, not survey data. A strong in-house team with native speakers can stand in for a partner in any cell.
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  • Inshallah

The short answer

Should you hire an ASO agency, build in-house or buy a tool?

Under 10 store-locales, in-house with a tool wins; a portfolio partner fits at 2 or more apps in 10 or more store markets, or one app in 20 or more. That is the rule Admiral Media applies when buyers ask which ASO model fits, even when the answer is in-house.

Updated

Original research, November 2026

Even top apps leave many listings not fully localized

271 of 1,107 language-supported app and storefront pairs were not fully localized in the App Store listings of 150 top apps we read on 2 November 2026.

24%of language-supported app and storefront pairs were not fully localized, across 25 portfolios
151of those 271 gaps had a translated description but still showed the base screenshot set

Source: Admiral Media portfolio store benchmark, public App Store data collected 2 Nov 2026. 25 portfolios, 37 developer accounts, 150 top apps, 14 storefronts. A selected sample, not a random one. Custom product pages and tests are not visible in public data and are not counted. Public data does not show who runs each listing, so these gaps say nothing about any one delivery model. The full localization study Benchmark method

The comparison

How do five ASO models compare across 20+ markets?

In-house wins on product knowledge, a tool on data, freelancers on language range, a single-market agency on home-market depth, and a portfolio partner on 20+ store-locales.

  • Strong
  • Partial
  • Limited
  • Depends on the provider

No price in any cell; each chip is our one-line reading of it. Other agencies run model five too: compare them, us included, with the RFP below. Open a row for the full detail. How this page was written

Five ASO delivery models compared on twelve criteria
CriterionModel 01In-house ASO teamModel 02In-house team plus a self-serve ASO toolModel 03Freelancers plus a translation vendorModel 04Generalist or single-market ASO agencyModel 05, how Admiral Media works. Other agencies offer it too.Portfolio ASO partner tied to Apple Ads and UA
Coverage of 20+ store-localesCapped by headcount

Limited by headcount and the languages the team speaks. Each new store-locale adds work for the same people.

Tracks every store

Your team still researches, writes and designs every listing.

Many languages fast

Someone in-house still briefs, checks and publishes each one.

Home market first

Usually strong in its home market and a few large ones. Ask how many store-locales it runs today.

Built for it

Every app and storefront is sorted into three tiers, so effort follows installs and revenue. Tier 3 markets get lighter, less frequent work.

Native keyword research per marketOwn languages only

Other markets often get translated keywords.

Search data only

Picking the words locals actually type still takes a native speaker.

Depends on the brief

Translation vendors translate keyword lists. Brief freelancers for research, not translation.

Often translated

Often researched in one language, then translated. Ask who researches each language.

Native, every market

Keyword research by native speakers in every market you run, kept in one keyword library per language and shared across apps.

Screenshot and creative localization throughputCapped by designers

Launches and in-app events compete for the same designers.

Your designers

Mostly data. Screenshots and captions are still made by your designers.

Grows with briefing

Grows with the number of freelancers, and so does the briefing and review work.

Often a separate scope

Good craft per project. Localizing every screenshot set into 20+ store-locales is often a separate scope.

Tiered by market

Localized screenshots and preview video in tier 1, localized captions in tier 2, reviewed captions in tier 3. Every listing is reviewed before release.

Custom product pages linked to keywords and kept aligned with Apple AdsIf one team owns both

Works when ASO and Apple Ads sit in one team. In many companies they report to different people.

Manual linking

Shows keyword data. Linking keywords to pages and ad groups stays manual work for your team.

Rarely in scope

Freelancers seldom see your Apple Ads account.

If it runs Apple Ads

If not, two teams plan from two lists.

One keyword map

Each keyword cluster gets a custom product page and its own Apple Ads ad group that sends taps to that page.

In-app events and LiveOps cadenceClosest to releases

When the ASO lead sits with the LiveOps team.

Monitors only

Event cards and copy stay with your team.

Hard to keep weekly

Every event needs a new brief and a new translation round.

Monthly rhythm

Works to a monthly or project rhythm. Weekly LiveOps needs a tighter loop.

One calendar, all apps

One release and event calendar across all apps, so metadata, in-app events and seasonal creative reach every store page on time. Event timing depends on your team sharing the release calendar early.

Compliance review for regulated apps (fintech, banking)Closest to legal

The review load lands on a few people.

Outside the tool

Not a compliance tool. Approval steps run outside it.

You run approvals

Each freelancer has to learn your rules. Approval and the audit trail stay with you.

Varies, ask

Ask for the approval workflow and a sample change log.

Change log for auditors

Every text change goes through your compliance review, with a written change log you can show an auditor.

Measurement and proof of incremental installs for financeWith analytics support

Without a control-market test, results show rankings and conversion rate, not extra installs.

Rankings and estimates

Rankings, visibility and estimates. Proving extra installs needs a test you design.

Out of scope

Out of scope in most setups.

Often before and after

Ask whether results are read against control markets.

Control-market tests

Test markets against matched control markets, rules agreed before the change ships, and a readout with your revenue data.

Continuity when a key person leavesBiggest risk

Unless the work is written down. With a playbook and change log, a new hire can pick it up.

Data stays, judgment goes

The data stays in the tool. The judgment that used it leaves.

Single points of failure

Each freelancer is a single point of failure for their markets.

If documented

The account survives staff changes if the work is documented. Ask who covers absences.

Named owner, playbooks

A named senior owner, written playbooks and a change log. You now depend on an outside team, so write the handover file into the contract.

Console access and asset ownershipYours throughoutCheck exports

Your consoles, plus a data subscription. Check what you can export if you stop.

Depends on setup

Depends on your setup. Give each freelancer a named role and keep files in your shared library from day one.

Put it in the contract

Should stay yours. Write it into the contract: your consoles, your files, your keyword sets.

Your consoles

Work runs in your consoles, tools and calendar. Role-based access with the fewest rights first, edit rights only for the people who publish, approved by your Legal and InfoSec teams.

What drives the costSalaries, mostly fixed

Plus hiring time and management. The same team costs the same in 5 store-locales and needs new hires to cover 50.

Subscription plus hours

A subscription, plus your team's hours to act on the data.

Day rates or per word

Plus your team's time to brief, check and publish.

Project fee or retainer

Set by scope and review rounds.

Store footprint

Apps, store markets, stores, custom product pages and how often you test. Separate from media. Plans run at least 6 months.

Time to first live changeFast if staffed

If you are hiring, add the time to hire and onboard.

Data on day one

The first change ships when your team has time to make it.

Days per market

For one market, once briefs and access are in place.

Ask for a date

Depends on its onboarding. Ask for the date of the first live change in the proposal.

Weeks 3 to 6

Access, baseline and the tier map in weeks 1 to 2. First approved updates in tier 1 markets in weeks 3 to 6. Slower to start than an in-house team that is already in place.

Right choice when1 or 2 core apps

One or two core apps, a few markets, and native speakers for each on the team.

A skilled marketer

A skilled in-house marketer, one or two apps and a few markets to watch.

One-off launch

A one-off market launch or a translation backlog, with someone in-house to run it.

One set project

One app, one or a few large markets, and a set project such as a relaunch.

Portfolios or 20+ markets

2 or more apps in 10 or more store markets, or one app in 20 or more, where Apple Ads and organic search share one keyword plan and finance wants proof.

Model by model

What does each model win on, and what does it cost you?

Every model has a cost: in-house pays in headcount per language, a tool in your team's hours, and a portfolio partner in a program of at least 6 months.

Model 01

In-house ASO team

Wins on

Product knowledge, same-day small changes, and a seat next to LiveOps and legal.

Costs you

Headcount for every language, months of hiring, and a playbook that leaves when people do, unless it is written down.

Model 02

In-house team plus a self-serve ASO tool

Wins on

Data for every storefront from one subscription. A skilled marketer goes far with it.

Costs you

Hours. A tool gives data and suggestions; your team still picks the words per language, designs screenshots and links pages to ads.

Model 03

Freelancers plus a translation vendor

Wins on

Language range and speed for a set job, with little commitment.

Costs you

Briefing and review time, and keyword research that quietly turns into translation.

Model 04

Generalist or single-market ASO agency

Wins on

Craft and depth in its home market, and clear set projects.

Costs you

Thin coverage beyond its main markets, and Apple Ads often run by another team.

Model 05, how Admiral Media works. Other agencies offer it too.

Portfolio ASO partner tied to Apple Ads and UA

Wins on

Tiered coverage of 20+ store-locales, one keyword map for organic search and Apple Ads, a test plan with control markets, and continuity.

Costs you

A program of at least 6 months and setup time for access and approvals. Not built for one app in one market.

Two numbers, four triggers

How do you pick a model in 10 minutes?

Count your apps and live store-locales, then check four triggers: the same two signals we use when a portfolio asks us.

  1. Count your apps2 minutes
  2. Count your live store-locales3 minutes
  3. Check the four triggers3 minutes
  4. Read your fit2 minutes

Your footprint

How many apps?

Every app with its own store listing, on either store.

How many live store-locales?

Each store and language you publish a listing in, such as App Store German or Google Play Japanese. Count each one once across the portfolio.

If two models fit, start with the one your team can run next Monday.

Pick both answers, or tap a cell in the map at the top.

1 app, under 10 store-locales

Usual fitModel 02In-house plus a tool

An in-house marketer with a self-serve tool covers this. Check the listing with the ASO Checker each quarter. An agency would cost more than the work needs.

Run the ASO Checker

1 app, 10 to 19 store-locales

Usual fitModel 02 + 03In-house plus a tool, with freelancers

Keep the work in-house with a tool, and brief native freelancers for keyword research and screenshots in the languages your team does not speak.

Run the ASO Checker

1 app, 20 or more store-locales

Usual fitModel 01 or 05In-house team or a portfolio partner

Staff an in-house team with native reviewers per language, or bring in a partner that tiers the markets and works with your lead. One person cannot research and review 20+ languages alone.

Book a portfolio review

2 to 4 apps, under 10 store-locales

Usual fitModel 02 or 04In-house plus a tool, or a single-market agency

An in-house lead with a tool is usually enough. Add a single-market agency for set projects such as a relaunch.

Run the ASO Checker

2 to 4 apps, 10 to 19 store-locales

Usual fitModel 05Portfolio partner with your lead

Here a portfolio partner starts to pay: one keyword library per language, one calendar, and checks so your apps do not compete, working with your in-house lead.

Book a portfolio review

2 to 4 apps, 20 or more store-locales

Usual fitModel 05Portfolio partner with your lead

Tier every app and storefront, research natively per language once, and plan custom product pages and Apple Ads from one keyword map. Your lead keeps the decisions.

Book a portfolio review

5 or more apps, under 10 store-locales

Usual fitModel 01In-house team

A dedicated in-house ASO team with a tool can run this, because the markets are few. Add outside help for new markets or cover.

Run the ASO Checker

5 or more apps, 10 to 19 store-locales

Usual fitModel 05Portfolio partner with your lead

Shared research across apps saves the most here. A partner runs the libraries and the calendar, your team keeps product knowledge and approvals.

Book a portfolio review

5 or more apps, 20 or more store-locales

Usual fitModel 05Portfolio partner with your lead

The case Admiral Media's model is built for: tiers per app and storefront, one keyword library per language, custom product pages and Apple Ads from one map, and a named senior owner.

Book a portfolio review

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Four triggers that change the answer

Each one moves the answer toward more help, whatever your size.

Your in-house ASO lead left

Momentum depends on what was written down. Start the week 1 handover below and arrange cover before the next release.

Week 1 handover

New markets in the next two quarters

Tier the new markets and research keywords natively before launch, so each store page is ready on day one.

Finance asks what ASO added

Plan a test against matched control markets, with the success rule agreed before anything changes.

How to prove it

Every text change needs compliance sign-off

Common in fintech and banking. Ask any provider for its approval steps and a sample change log before you sign.

2 or more apps in 10 or more store markets, or one app in 20 or more? Get one plan across every market.

Book a portfolio review

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Fit

Which model fits your apps?

Three of these six common situations need no agency at all; two point to a portfolio partner.

Model 02In-house team plus a self-serve ASO tool

One app in 2 markets, with a strong in-house marketer

Buy a self-serve tool and check the listing with the ASO Checker each quarter. An agency would cost more than the work needs.

Run the ASO Checker

Model 01In-house ASO team

A studio whose ASO team already has native speakers for its 8 markets

Keep it in-house and add a tool for data. Buy outside help only when you open new markets.

Model 03Freelancers plus a translation vendor

One app adding 3 languages this quarter, with an ASO lead in place

Brief native freelancers for keyword research, not only translation, and let your lead review and publish.

Model 04Generalist or single-market ASO agency

One app relaunching its listing in its home market

A set project in one market is what a single-market agency does well.

Model 05Portfolio ASO partner tied to Apple Ads and UA

A publisher with 6 apps in 25 store-locales whose ASO lead just left

Week 1 handover of access, keyword sets, asset library and test log, then first approved updates in tier 1 markets in weeks 3 to 6. It also works as cover while you hire a new lead.

See the week 1 handover

Model 05Portfolio ASO partner tied to Apple Ads and UA

A fintech with several apps in 20+ markets where finance asks what ASO added

Every text change goes through your compliance review with a change log, and results are read against matched control markets.

How the proof works

Our in-house ASO lead just left

What does a partner need in week 1 to keep momentum?

Access, keyword sets, the asset library and the test log. Collect them before the notice period ends; each saves weeks of rebuilding, whoever takes over.

01Access

  • App Store Connect and Play Console roles with the fewest rights first
  • Your Apple Ads account
  • Analytics or attribution read access by market
  • Your approval contacts in Legal and compliance

02Keyword sets

  • Live keyword fields per app and store-locale
  • Tracked keyword lists and the reasons behind them
  • Keywords linked to each custom product page
  • Terms your sister apps target, to avoid overlap

03Asset library

  • Source files for icons, screenshots and preview videos
  • Localized caption files per store-locale
  • Brand and legal copy rules
  • Custom product page sets and their URLs

04Test log

  • Product page optimization tests and store listing experiments, with results
  • Metadata change history with dates
  • The release and in-app event calendar
  • Open ideas and tests still running

How momentum is kept

  1. Weeks 1 to 2Access, baseline per app and market, and the tier map.
  2. Weeks 3 to 6First approved updates in tier 1 markets.
  3. ThroughoutReleases and in-app events on your calendar keep going out.
Book a portfolio review

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Buying ASO

What goes in an enterprise ASO RFP and pilot?

Ask every bidder the same eight questions, then run a 90-day pilot with the success rule signed off before anything changes.

Ask every bidder

Scope
Which apps, stores and store-locales, sorted into tiers, with the work in each tier.
Research
Who researches keywords in each language, and whether they are native speakers.
Creative
How many screenshot sets and preview videos per quarter, and who reviews each store-locale.
Paid and organic
How custom product pages, linked keywords and Apple Ads ad groups are planned together.
Compliance
The approval steps for regulated copy, with a sample change log.
Access
The roles needed in App Store Connect and Play Console, starting with the fewest rights.
Measurement
How results are read against control markets and joined with your revenue data.
Continuity
The named owner, cover for absences, and the handover file if you part ways.

A 90-day pilot with success criteria set first

  1. Weeks 1 to 4Charter and baselineTest markets, matched control markets, the metric, guardrails and the decision rule, signed off before anything changes. Four weeks of baseline.
  2. Week 5Changes shipMetadata, localization or creative goes live in the test markets only. Apple Ads budgets stay as they were.
  3. Weeks 6 to 12Read against controlA weekly read of the gap against the control forecast, with a range. No early calls unless a guardrail breaks.
  4. Day 90ReadoutExtra installs per market with your revenue data, judged against the rule set at the start: roll out, change or stop.

At Admiral Media the pilot is the first 90 days of an ASO program of at least 6 months, and the success criteria are written down before work starts. The full method

Questions

ASO agency, in-house or tool, answered

One app in a few markets? Check it first with the ASO Checker. Many apps? See enterprise ASO.

Should we use an ASO agency, an in-house team or an ASO tool?

Use an in-house team with a self-serve tool under 10 store-locales, add native freelancers for one app in 10 to 19, and use a portfolio partner from 2 apps in 10 or more store-locales. One app in 20+ needs native reviewers in-house or a partner.

Our in-house ASO lead just left. Which agencies can take over ASO for a large consumer app without losing momentum?

Pick a partner that can take over from your consoles and files in week 1: role-based access, the live keyword sets per app and store-locale, the source files for screenshots and videos, and the test log. Ask for a named senior owner and written playbooks. Admiral Media takes over this way and ships first approved updates in core markets in weeks 3 to 6.

Which ASO agencies can run App Store and Google Play optimization across a portfolio of 20+ apps in 40 markets without duplicating work?

Look for a partner that sorts every app and storefront into tiers, keeps one keyword library per language shared across apps, plans store updates on one calendar and checks that sister apps do not target the same terms. Admiral Media runs portfolio ASO this way on the App Store and Google Play, with custom product pages and Apple Ads planned from one keyword map.

What should an enterprise ASO agency RFP include, and how should we structure a 90-day pilot with clear success criteria?

Ask every bidder for scope by app, store-locale and tier, who does native keyword research, how custom product pages tie to Apple Ads, the compliance workflow, access model and continuity plan. Run the pilot in 2 or 3 test markets against matched control markets, write the success criteria before the first change, and read the result out at day 90.

Is a self-serve ASO tool enough for an app in 20+ markets?

For data, yes. A tool shows rankings and search data per storefront. It does not choose the words locals type, design localized screenshots or link keywords to custom product pages. With 20+ store-locales the work itself is the bottleneck, so a tool pays off only next to people who can act on it in each language.

Why is ASO in 20+ store-locales hard to run?

Each store-locale is a listing to research, write, design and keep current, and few teams have native speakers for each. In Admiral Media's benchmark of 25 app portfolios on 2 November 2026, 271 of 1,107 language-supported app and storefront pairs (24%) were not fully localized, and 151 of those gaps still showed the base screenshot set.

How do the costs of in-house ASO, tools and agencies compare?

By cost drivers, not one number. In-house cost is salaries and hiring time, and grows in steps with new languages. Tools charge a subscription plus your team's hours. Freelancers and translation vendors charge by the day or by the word. Agencies charge by scope. Admiral Media publishes no prices: its fee is scoped by apps, store markets, stores and custom product pages, and plans run at least 6 months.

Is this comparison neutral?

No page written by one of the options is fully neutral. Admiral Media is one portfolio partner among several, and model five is how we work. We describe the other four as categories without naming any agency or tool, show no prices for any model, take our own facts from our published pages, and say plainly where another model is the better choice.

Method

How this page was written

The four other models are described as categories, without naming any agency or tool. Costs are shown as cost drivers, with no prices for any model, ours included. Admiral Media facts come from our enterprise ASO and ASO incrementality pages, read 4 November 2026. Client results come from published case studies, and the localization figures from our portfolio benchmark of 2 November 2026. If anything here is out of date, tell us through the contact page and we will review it within 5 working days.

More comparisons

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Tell us your apps and store-locales

Share your apps, stores and the markets that matter most. A senior strategist replies within one business day, and will tell you if another model fits better.

  • One plan for every app and store-locale
  • A week 1 handover if your ASO lead has left
  • At least 6 months, or start with a one-time audit

What happens next

  1. A senior strategist reads your brief.
  2. A 30 minute call about your apps and markets.
  3. A written scope and fee. You decide if it is a fit.
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