App Inventor relies on the community to provide translations in a wide variety of languages. If your language is missing or incomplete, please consider signing up to be a translator!
We crowd source our translations using weblate. In order to translate, please create an account on our weblate server here: https://weblate.appinventor.mit.edu
After you have created an account, notify me so that I can grant you permission to translate. You can do that here, in a private message, or via email (srlane@mit.edu).
We have a video tutorial on how to use weblate here: Weblate Translation Tutorial - YouTube
The more translators we have, the more likely it is that we can publish your language. Please feel free to invite friends and associates with expertise in your language to participate.