Great to have  especially for free (I sorta wish I could pay $5 for a fully-developed version  but I suspect the developer is restricted by the open-source licence of the source code). As others have commented  it lacks some key features; for me  the buzz-kill is the inability to add comments. A bummer as I use this to create databases of books while I'm reading them. A work-around is to add comments on your computer via SCID or any of its variants. I had to do the following: Copy the 3 files associated with the database to my local computer  change the permissions  edit them in SCID or any of its variants  copy them back onto the Android device  then reload the database (for effects to be seen  one must load any random database and then reload the edited database).
October 20 2016