iOS应用本地化咨询：德国用户下载时显示英文还是西班牙语

Hey there! Let’s break down exactly how iOS decides which language to show your app to users, and apply that logic to your specific scenario:

Core iOS Language Matching Logic #

iOS follows this clear priority order when selecting your app’s display language:

• First, it checks the user’s device preferred language list (found in Settings > General > Language & Region). It will pick the first language in this list that your app has localized support for.
• If none of the user’s preferred languages are supported by your app, it falls back to your app’s development language (set in Xcode—in your case, Spanish (Latin America)).

Critical Distinction: Development Language vs. App Store Primary Language #

Don’t mix these up—they serve totally separate purposes:

• Xcode Development Language: This is the "default fallback" language for your app’s internal content (buttons, text, UI elements) when no matching user language is found.
• iTunes Connect Primary Language: This only controls the language of your App Store listing (description, screenshots, reviews, etc.). It has no impact on which language your app actually displays once downloaded.

Your Specific Scenario: German Users #

Since your app supports Spanish (Latin America) and English, here’s what will happen:

1. If the user’s device has English listed as one of their preferred languages (super common for German users who speak multiple languages), iOS will display your app in English.
2. If the user’s preferred language list only includes German (and no other supported languages like English), iOS will fall back to your development language—Spanish (Latin America).

Quick Test Tip #

You can easily verify this yourself in Xcode:

• Open the simulator, go to Settings > General > Language & Region > Add Language to add German and adjust the priority order.
• Launch your app to see which language loads based on your settings.

内容的提问来源于stack exchange，提问作者reojased