Andy BalaamTwidere is working nicely for me as a Mastodon Android app https://f-droid.org/en/packages/org.mariotaku.twidere/
Jonkman Microblog is a social network, courtesy of SOBAC Microcomputer Services. It runs on GNU social, version 1.2.0-beta5, available under the GNU Affero General Public License.
All Jonkman Microblog content and data are available under the Creative Commons Attribution 3.0 license.