I'm developer of Sfen application (Open source, event-based, profile management application for Android smart phones).
We finally moved to beta stage and moved all hardcoded strings into strings.xml. I've also created new project on crowdin.com with all languages Sfen would like to hit.
If you can contribute in Sfen development, please feel free to support Sfen localization on crowdin.
Your name will be mentioned in application's about page when it gets released.
Thank you and best regards,