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How to localize your app
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When you deliver great localization in your app, you can support your customers in their native language and provide a better overall experience. Here’s how you can get started localizing your content quickly and effectively inside Xcode.
Translate your app’s content
Use the Xcode Export For Localization feature to automatically extract all localizable content, including strings referenced from code, stringsdict files, and Interface Builder files, as well as any localized assets. This process shouldn’t require modifications to your source code, making it easy to work on translations in-house or with an external localization service. Be sure to also localize purpose strings for a consistent app experience, and consider localizing your privacy policy so that all users have a clear understanding of how their data may be handled.
Apple Services
Use Apple APIs to automatically present localized buttons, payment sheets, errors, and more for Apple Pay, Apple Wallet, and Sign in with Apple.
Audiovisual Media
You can also provide localized support for audiovisual media in your app using AVKit and AVFoundation. These frameworks provide built-in support for easily presenting subtitles and closed captions, and for selecting alternative audio and video tracks.
Localization Services
If choosing an external localization service to help translate content, find out if they specialize in localizing for particular languages, cultures, or categories, and confirm the levels of quality assurance they provide. Providing the service with context about your app and content can help increase efficiency and minimize translation errors. Consider creating a guide with important details — for example, a playbook with character names and personalities, explanations of jokes or humor, a glossary of frequently used terms, and screenshots that show where the translations will be used. Avoid machine translation as your only translation method, since this can lead to inaccurate and low-quality translation because it does not account for context, cultural sensitivities or language nuances. For example, the “book” button in a hotel app might be incorrectly translated to be “novel” rather than “reserve”.
Learn more about localizing your app in Xcode >
Test your localization
Configure test plans in Xcode to easily run tests with different settings and define your testing variants in one place. This helps flag any instances of clipping, truncation, layout overlapping, or issues with right-to-left formatting for the devices and languages you support.
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You can use the Localization Screenshots feature to generate localized screenshots from successful tests and export these screenshots for use in tutorials, marketing materials, or your App Store product page. Once your app is localized, use TestFlight to share your app with a group of users in the market to get feedback and gather opportunities for improvement.
Resources
Watch “Testing in Xcode” >
Learn more about testing your app in Xcode
Learn more about expanding your app to new markets >
Get more resources for localization >
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