What app store localization services do, in short

A full-service localization company translates your app interface strings, adapts layouts and cultural details, tests on physical devices, and localizes your App Store listing (title, subtitle, description, keywords, screenshots). Expect a scoped project with per-word or per-locale pricing and a timeline of weeks. If you only need the listing translated, a purpose-built tool can finish that same pass in hours.

What app store localization services usually include

Most agencies scope app localization in three layers. First, string translation: every button label, menu, error message, and push notification pulled from your code into a translation workflow, then reviewed by native speakers. Second, adaptation and testing: layouts stretched for long languages like German, right-to-left mirroring for Arabic and Hebrew, date and currency formats set per market, and testers tapping through builds on physical phones and tablets to catch clipped text and broken flows. Third, store listing localization: the title, subtitle, description, keyword field, and screenshots rewritten per locale so the product page reads like a local app. That third layer is the one every localized app needs no matter who builds it, because shoppers judge you on the listing long before they touch your interface. Ask any proposal to price the listing layer on its own line. If your app interface is simple or already works for your markets, the listing layer may be the whole project.

When you read a proposal, check that these line items are present and priced separately:

  • Interface strings: extraction from code, translation, and native-speaker review.
  • Layout and cultural adaptation: text expansion, right-to-left layouts, formats, imagery.
  • Device testing: builds tapped through on physical hardware in each target language.
  • Store listing: title, subtitle, description, keyword field, and screenshots per locale.
  • Release support: What's New text and promo text for updates, not just launch.

A proposal that bundles everything into one flat fee hides the part you could have done yourself. Unbundle the listing layer first, then decide what is left worth paying for.

What services cost and what drives the price

Agencies usually price by word count, locale count, or fixed project scope. Five drivers move the number more than anything else: how many words your app and listing contain, how many locales you fund, whether screenshots need rework per market, how much device testing you ask for, and how many review rounds are included. Screenshot localization and testing are the expensive layers. Pure text translation is cheap by comparison.

  1. Count words honestly: listing text is small (a few hundred words), interface text can be ten times that.
  2. Fund fewer locales well instead of many locales thinly; each locale multiplies testing.
  3. Ask whether screenshot captions are re-rendered per language or just translated in a doc.
  4. Confirm review rounds: one native pass is standard, two costs more.
  5. Get the listing layer priced alone so you can compare it against a tool pass.

For reference, a purpose-built listing tool charges a flat one-time fee per listing (App Store Localizer charges $19.99 for 3 languages and $99.99 for all supported languages). If an agency quotes the listing layer at many times that, you should know exactly what extra craft you're buying. When quotes arrive, compare them line by line instead of bottom line against bottom line: one vendor's flat fee may hide two review rounds while another charges them as extras. Ask each bidder the same three questions: which locales are included and which cost extra, how screenshot rework is priced per market, and what a second review round adds. Timelines matter too. A listing-only pass should take days, not months. If a proposal stretches simple listing work across six weeks without testing or release support attached, you're looking at padded scheduling rather than deeper craft.

When hiring a service is the right call

Hiring pays off when the app itself needs cultural surgery, not just translated text. Complex navigation, social features, payments, or regulated content (health, finance, kids) all reward professional linguists plus testers. It also pays when you ship in many locales on a release train and nobody on your team speaks those languages. A good agency catches what machines miss: jokes that offend, icons that confuse, and flows that break when text grows by a third.

  • Your interface has thousands of words across many screens.
  • You operate in regulated categories where wording carries legal risk.
  • Brand voice matters and literal translation would flatten it.
  • You release often and need translators on call per version.
  • Nobody on the team can QA a foreign-language build.

Onboard a service the way you'd onboard a contractor: share your glossary (brand terms that never change), your screenshot source files, and one example of tone you like in each priority market. Set a single decision-maker on your side for review rounds, since feedback by committee is where localization timelines go to die. And keep the listing layer in the same contract so screenshots, keywords, and interface strings ship as one coherent page rather than three vendors' guesses about your app.

When a DIY listing pass beats hiring

Many indie apps don't have those problems. The interface is simple or visual, the audience reads basic English inside the app, but the store listing must sell in Japanese, German, Korean, and Portuguese. That is a listing problem, and listings are bounded work: five fields plus screenshots, done once per locale, then maintained per release. A DIY pass with a focused tool finishes it in an afternoon for a flat fee.

  1. Your app works fine in English but your listing needs local languages to get installs.
  2. You're validating a market and can't justify agency scope yet.
  3. You need screenshots translated, not just text, and agencies price that layer highest.
  4. You want to ship this week, not next quarter.

The afternoon itself runs in a fixed order. First, lock your English listing (name, subtitle, keywords, description) so translators and tools work from a stable source. Second, translate the text fields and generate localized keywords per market. Third, re-render screenshots with translated captions and check them at full App Store sizes, since captions that look fine in a doc often break inside a frame. Fourth, paste everything into App Store Connect per locale and preview each storefront before you submit. That sequence is the same whether software or a freelancer does the keystrokes.

Start with the listing. If localized screenshots and metadata lift installs in a market, fund deeper work there with actual revenue behind it.

How App Store Localizer handles the DIY listing pass

App Store Localizer (https://asolocalization.com) is built for exactly the DIY case above. Paste a public App Store URL and it imports your title, description, icon, and screenshots. It translates the title, subtitle, description, and keyword field per locale, generates localized keywords from free ASO heuristics over your listing, and produces translated screenshots in the two App Store sizes (iPhone 14 Plus 1284x2778 and iPad Pro 12.9-inch 2048x2732). Then download the assets or publish toward App Store Connect.

Pricing is one-time per listing, not a subscription: Starter at $19.99 covers 3 languages with every available screenshot, and Global at $99.99 covers all supported languages. There's no word-count meter and no per-locale testing fee because the scope is the listing, not your codebase. Two honest limits: it localizes the store listing only (not interface strings or code), and keyword suggestions come from listing heuristics rather than paid search-volume data.

If your listing is the gap between you and a global audience, run the DIY pass this week at https://asolocalization.com and put the money you saved toward the locales that actually convert.

Frequently asked questions

  • Do app store localization services translate screenshots too? Most full-service agencies do, often as the priciest line item, since captions must be re-rendered per language and checked at App Store sizes. If screenshots are your main gap, compare that line item against a screenshot tool before signing.
  • Can I localize just my App Store listing without localizing my app? Yes. App Store Connect treats each localization independently, so you can ship a Japanese listing for an English interface. Many indie teams do exactly this to test a market before funding full interface work.
  • How many locales should a small app start with? Start with two or three markets where you already see downloads or wish-list interest, plus English. Nail those listings end to end (screenshots included), measure installs, then expand with revenue behind you.
  • Will a translated listing get my app rejected by App Review? Translation itself is not a rejection reason. Rejections come from misleading claims, trademark abuse, or keyword stuffing in any language. Keep every locale honest and within the character limits and review treats them like the English original.
  • How do I keep localized listings fresh after each app update? Treat What's New text and promo text as part of every release checklist, not an afterthought. Translate release notes per active locale with each version, refresh screenshots only when the interface visibly changes, and revisit keywords quarterly against the queries your listing actually earns impressions for. A listing that launched multilingual but updates in English slowly rots back into a monolingual page.