It works - tested between two different hardware platforms running different versions of Android. Open source  algorithm described. Registers itself as image producer/consumer  do can export and import images directly from other apps. One can port to other platforms for a cross-platform Stego app. Bad: unable to load an image to decode the message - have to go through another app. Very slow (perhaps inevitable with the algorithms used). Somewhat unstable - it didn't work for me (refused to decode)  now somehow it does  unsure if it's a streak of luck to run out soon  or it will work on from now on.
March 27 2016