Hi,
My name is Henning and I am the co-maintainer of MobileOrg Android.
The reason I stopped working on the project is partially the lack of time, but also because I didn't believe in the design of org-mobile-push/pull and edit nodes. Almost half of the bugs on our issue tracker are with regards to synchronization. Our mailing list is also full with questions about how to set synchronization up. This is the reason I tried to come up with a better design based on git synchronization. And I did ;)
I have been working over the last couple of months on a private prototype. I'm currently using it in my daily life and it works for me. It uses Git (and only Git) for synchronization and doesn't use org-mobile at all. The idea is that you keep all org files under git version control. Synchronization of all "clients" (apps or Emacs) is done against that repository. It is also possible to configure whether to use "ours" or "theirs" merge strategy when conflicts occur. I have focused on designing an app I can trust.
It already has an outline view like MobileOrg, an agenda view, you can add and edit nodes, synchronize changes with a remote repository and synchronize scheduled entries to the calendar. I ported some of my code from MobileOrg, but a lot of it is written from scratch.
I don't feel comfortable publishing it for general consumption yet. There are still some rough edges for the end user, but the core functionality is done and it works reliably. If you want to help development and testing, feel free to contact me :)
Henning