Former WMF app now community-maintained, where to crowdsource localization?
Ok. [1] finds Translating:WLMMobile (not active yet), then there is Translating:WikimediaMobile for the "official" apps.
WLMMobile is a completely different app, with a different purpose (see wireframes), untouched since 2014, and we don't have strings in common.
Could you please create a new project called "Commons Android app" as a sub-project of "Wikimedia Mobile Apps"? I have read https://translatewiki.net/wiki/Translating:New_project and we seem to fit :-) Thanks a lot!
I have zero idea how to create a project using Translatewiki (I usually create my projects on Crowdin.net instead), but anyway I created a new page for the project, I hope this helps: Commons Android app
Ah, I see [1] now. It's ok to use Translating:WikimediaMobile but the page needs to contain link to repository and issue tracker, mention of the project contact, any information relevant to translation.
Added to that page, thanks :-) https://translatewiki.net/w/i.php?title=Translating%3AWikimediaMobile&type=revision&diff=6873504&oldid=6824219