With Day One 2, we've added localization support for many different languages. If you have enabled multiple foreign languages and keyboards on iOS, you can manage what language is used in Day One by doing the following:
- Go to your device Settings > General > Language & Region.
- Tap Edit.
- Drag the language you want to use with Day One to the top of the "Preferred Language Order" list. If we don't support that language, the first supported language from the top of the list will be used in Day One.
- Tap Done.