We will soon be releasing a beta version of the Endless Companion app (Android only for now), and need help translating about 14 strings in each language:.
Google Play Store Description: https://www.transifex.com/endless-os/android-companion-app/playstoredescriptionxml/
If you have any questions about specific strings, please tag Roddy and I on Transifex. If you have broader questions, feel free to ask them here so that more people can benefit from the answer.
If you would like to help us translate Endless OS and things like the upcoming Endless Companion app into your language, please check out this article with steps on how to do so: Get Involved | Translations.