I tested joooid on a tablet running Cyanogenmod 10 / Android 4.1.2. My Joomla installation is 2.5.8.
The basic idea of Joooid is pretty brilliant. Write articles on your tablet - even offline. Manage your content while you are traveling. With the location- and photoupload functions, it could even help to make a personal homepage or blog a facebook replacement.
Managing articles mainly didn't work. Creation worked but not publish/unpublish, trash, etc.
Joooid only knows the pre-ACL access-groups. Those seem to be hardcoded. Individual group/access-level structures are not downloaded. What's even worse, everything that Joooid can't associate with some of the pre-ACL access-groups, is PUBLIC!
So, be VERY careful when you use Joooid to edit existing articles when you have your own ACL-system.
I sent an email to the developers via the integrated report-function but did not get any kind of reply.
Bottom line: Really great idea but missing functionality and a few nasty security issues.