Friendica

The app started as a simple image uploader providing an entry in the
"Share"/"Send" menu of Android apps (e.g. the gallery app) to send photos to
your Friendica account.

Now it's being extended towards a full interface for Friendica, including
timeline display and the ability to view and post on you and your friends'
profile walls. You need to have a Friendica account. To get one, choose a site
from the Friendica directory. It's free!