Most developers who try localization do it wrong — not because they're careless, but because the word "localization" is misleading.
When you hear "localize your App Store listing," the obvious interpretation is: translate the text into the target language. Run the description through DeepL, paste it in, done. Your app now has French metadata. You're localized.
Except you're not. Not in any way that affects your rankings.
Here's the difference between translation and ASO localization — and why it matters more than almost any other decision you make about your App Store listing.
What Translation Does
Translation converts your existing text from one language to another. The meaning stays the same. The words change.
If your English subtitle says "The fastest habit tracker for busy people," a translation into French gives you something like "Le tracker d'habitudes le plus rapide pour les gens occupés."
That's accurate. It's readable. A French user who lands on your listing will understand it.
But it does almost nothing for your search ranking in France.
Why? Because the words in your subtitle came from how you describe your app in English — not from how French users search for apps like yours in the App Store. Those two things are rarely the same.
What ASO Localization Does
ASO localization starts with a question translation never asks: what do users in this country actually type into the App Store search bar?
The answer is almost always different from what you'd expect.
A "habit tracker" in English might be searched as "suivi des habitudes" in France — or it might be searched as "routine quotidienne" or "objectifs journaliers." The right answer comes from keyword research specific to the French App Store, not from translating the English term.
ASO localization means:
- Researching search volume by market — which terms get searched in that language, and how often
- Analyzing competitors — what keywords the top-ranked apps in that category rank for in that locale
- Identifying gaps — terms with real volume that your competitors rank for but your app doesn't appear for at all
- Writing metadata around those terms — title, subtitle, and keyword field crafted to target the highest-opportunity keywords, in the local language, within Apple's character limits
The output looks like translated metadata — but it was built from the search data up, not from the English copy down.
A Concrete Example
Take a simple app: a sleep sounds app targeting Germany.
Translation approach:
- English title: "Sleep Sounds — White Noise"
- German title (translated): "Schlafgeräusche — Weißes Rauschen"
ASO localization approach:
- German keyword research reveals: users search "Einschlafhilfe" (sleep aid), "Naturgeräusche schlafen" (nature sounds sleep), "Entspannungsmusik" (relaxation music)
- "Weißes Rauschen" has very low search volume in Germany
- Localized title: "Einschlafhilfe — Naturgeräusche & Rauschen"
The translated title targets a term almost nobody searches. The localized title targets what German users actually type. Same app, same character limit — completely different ranking outcome.
Why This Matters for the Keyword Field
The title and subtitle are visible to users, so there's some intuition to translate them well. But the keyword field is invisible — users never see it — which means developers often treat it as an afterthought.
Most apps that "localize" by translation either:
- Leave the keyword field in English across all markets
- Translate their English keywords word-for-word into the target language
Both approaches waste the 100 most important invisible characters in your App Store listing.
The keyword field is where ASO localization does its heaviest lifting. A properly researched keyword field in German, French, or Japanese targets the exact terms users search — terms that your title and subtitle can't fit. It's the difference between Apple having 30 signals to match your app to searches, or 130.
The Screenshot Problem
Translation affects screenshots too — and it's where the visual and the keyword strategy have to work together.
A screenshot with English text shown to a Japanese user converts poorly. That much is obvious. But the mistake most developers make when "localizing" screenshots is simply translating the English copy.
If your English screenshot says "Build habits that stick," a localized version shouldn't just say the Japanese equivalent of that phrase. It should say whatever resonates most with Japanese users in your category — which may be a different benefit angle entirely, informed by what competitors emphasize and what local reviews mention.
That's localization. Translation is the step inside it.
The Practical Difference in Results
When developers translate their App Store metadata, they typically see no ranking movement. The text is correct but the keywords are wrong for that market.
When developers localize properly — keyword research first, metadata second — rankings move. The case study posted here documents exactly this: apps that had translated (but not localized) metadata for years, then went through proper keyword-first localization, and saw 20–150 position gains within 60 days.
The difference isn't the language. It's the research behind the language.
What to Do
If you've already "localized" your app by translating the description and calling it done, check two things:
-
Open App Store Connect. Go to your app's metadata. Select any non-English locale. Look at the keyword field. Is it blank? Is it the same as your English field? Is it just translated English keywords? If yes to any of these, you haven't localized — you've translated.
-
Check your rankings. Pull up a ranking tracker for your primary keyword in German, French, or Japanese. If you're unranked or below position 100, the keyword field is almost certainly the problem.
The fix is keyword research for each market, starting from scratch in the local language — not from your English copy.
That's the work LocalizeRank does. Starting at $49 for 5 markets.