The best language to localize next is the one with a clear customer need that your app can support. Existing users, relevant search demand, service availability, a fluent reviewer, and maintenance costs are more useful than a universal language ranking.
A Japanese game, a local delivery service, and a professional scheduling tool can have completely different priorities. Use the framework below to choose a small pilot, then prepare its localized listing draft. Language coverage alone is not evidence of revenue.
Start with signals you can act on
- Existing demand: inspect useful activity, paying users, relevant visits, and language requests by the market dimensions your data provides.
- Product fit: confirm the service, content, authentication, purchases, and support work in that market.
- Search language: collect local terms for the task and distinguish vendor estimates from observed results.
- Review capacity: identify someone who can check meaning, screenshots, and the complete user journey.
- Maintenance cost: estimate changed copy, future screenshots, support, and engineering alongside initial translation.
National spending or download reports can provide context. Keep their year, platform, geography, and scope attached. Country-level spending does not tell you what every speaker of a language spends, and broad market revenue does not establish your reachable category demand.
Compare candidate locales without stereotypes
The following table provides review considerations, not a revenue ranking. Validate each consideration against your actual app and intended audience.
| Language or locale | Questions to resolve |
|---|---|
| Japanese | Which task terms are natural? Are script, line breaks, typography, and product labels readable? |
| Korean | Does the terminology match the category and interface? Does shortened copy preserve the intended tone? |
| German | Do compound terms and concise labels fit? Are regional terminology and currency presentation appropriate? |
| French | Which regional variant is intended? Do examples, punctuation, and product availability match that audience? |
| Portuguese (Brazil / Portugal) | Which variant can you support? Have vocabulary, payment context, and examples been reviewed separately? |
| Chinese (Simplified / Traditional) | Which script and market are intended? Are distribution, content, and service access supported there? |
| Spanish | Which regional audience are you writing for? Do pricing, vocabulary, and support match it? |
| Italian | Is there relevant demand for your particular category, and can a reviewer check the complete task? |
| Russian | Does your distribution and payment setup support the target country? Avoid treating language as a single territory. |
| Turkish | Do casing, search terms, and locale-aware formatting behave correctly? |
| Dutch / Polish | Do existing customers justify a pilot? Check local vocabulary, plural forms, and interface fit. |
| Arabic / Hebrew | Does the product support RTL interaction, mixed-direction text, and readable screenshots? |
| Thai / Vietnamese | Are fonts, diacritics, line breaks, and search language appropriate for the task? |
| Hindi / Indonesian | Which users and devices are you serving? Does the complete experience match their language and connectivity needs? |
Do not infer that an entire country never installs English apps, always prefers a certain color, or has one willingness to pay. Those claims hide the audience differences you need to investigate. Use review and your own customer evidence.
Language is not country availability
A language can serve users in multiple countries, and a country can have several languages. A translated listing does not grant distribution access or make a service available. Record both the store locale and the territories where you can fulfill the promise.
Google's localization guidance distinguishes listing translations from other differentiated store experiences. Apple's localization overview treats product and metadata work together. Check the current store locale options before ordering translations.
Compare the evidence for each market
List each candidate market with evidence of demand, product readiness, reviewer availability, estimated launch cost, and person responsible for future updates. Mark unknowns as unknown. If you use a score to sort the options, keep the underlying evidence beside it.
| Illustrative candidate | Known signal | Blocker | Next step |
|---|---|---|---|
| Locale A | Several existing customers request it | Purchase flow untranslated | Test that flow before publishing |
| Locale B | Relevant visits, little useful activity | Cause unknown | Review comprehension with users |
| Locale C | Large market in an industry report | No app-specific demand evidence | Research the task before ordering translation |
These are fictional planning examples, not AppDrift customer results. The strongest candidate is the one with the clearest customer interest and fewest unresolved product problems.
Budget for the first locale and the next release
Include source editing, translation, native review, screenshot capture, engineering, and support. In AppDrift, AI translation consumes tokens; language support does not mean unlimited work. Compare the quoted job and current plan boundaries using the localization budget guide.
Keep reviewed wording and source versions together in Listing updates. If each new release will invalidate a large share of your translations, reduce the initial scope until you can maintain it.
Validate before expanding
Review metadata and real screenshots, verify the live store version, and observe useful product activity. Use localized screenshot layouts around actual captures; changing captions does not translate the app UI.
Measure discovery, store-defined conversion, useful activity, and revenue separately. A trial start is not revenue. A rank increase is not a purchase. A before-and-after change may reflect campaigns or product updates. If traffic is low, allow more time before deciding whether to expand.
Use the localization checklist for the selected pilot. Expand when people can complete the task and the evidence justifies ongoing work.
Frequently asked questions
What are the top five languages for every app?
There is no universal top five. Prioritize app-specific demand, product availability, a fluent reviewer, and maintenance cost, then validate a small pilot.
Should I choose languages by total app-store revenue?
Use market reports as dated context. Their category, platform, and country coverage may differ from your reachable audience; they do not predict revenue for your app.
Does a language cover only one country?
No. Languages and countries have different boundaries. Check regional variants, store locales, product availability, and support separately.
How do I know whether to add another language?
Look for useful product activity, qualified demand, manageable support, and someone who can maintain the translation. Keep trial starts and downloads separate from paid revenue.
