How to change the language for Boomerang for iOS
Boomerang for iOS is available in English, German, French, Spanish, Dutch, Italian, Portuguese, and Japanese. Boomerang will pick the top preferred & supported language in your iOS System Settings.
How to change your top preferred language
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How to change the language for the Boomerang app only
If you have multiple languages or keyboards, you can also change the app language without changing the system language:
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