Appetize.io supports different languages and locales, and these values can be set by default by adding custom query parameters. You can see our docs on language, locale, and iosKeyboard settings at https://appetize.io/docs

For example, you may run our demo in French using link https://appetize.io/demo?language=fr&locale=fr_FR (in French). We also support a iosKeyboard query parameter to specify the exact keyboard for iOS. The Android keyboard does not need this feature, as it update automatically based on the language specified. 

For example to specify a Japanese keyboard, please add the query parameter to your app URL:
&iosKeyboard=ja_JP@sw
 
Here's an example using Japanese:
https://appetize.io/demo?language=ja&iosKeyboard=ja_JP@sw

Here's an example using French AZERTY keyboard:
https://appetize.io/demo?language=fr&iosKeyboard=fr_FR@sw

A full list of supported keyboards can be found at:
https://pgssoft.github.io/AutoMate/Enums/SoftwareKeyboard.html