Buggy and limited  but has potential I love Sage and Sage Cloud  but Sage for Android just has too many show stopping bugs and lacks key features. Sage instantly crashes or reloads the document whenever I rotate my screen. Also lacks any kind of import/export so that you can work on a different device or edit a Sage file from your desktop on the go. Still  it's like having a portable Wolfram Mathematica  so it's pretty cool.
February 09 2015