due to some changes in Moodle 2.5 and 2.6, the feature named "Remote language sync" is not working currently now (it works for a short period of time as far as i Know)
I'm working in adding languages support directly in the app, so when you download the app it will come with some languages packages available
The app will detect your preferences or locale and will display the texts in your device language
If anyone has translated the app yet, please, reply this message attaching your translation.
If you want to help, you can translate this file:
and also reply this message with your translation
Issue in the tracker: https://tracker.moodle.org/browse/MOBILE-489
Also, if anyone has technical suggestions about how to handle RTL languages, it will be appreciated