I am reminded of the good old days of the competition between mobile software on my Palm devices when I see developers like DataViz and Quickoffice going back and forth with updates and improvements. We are seeing this same competition take place on the iPhone as one takes the lead and then the other comes out with an update that passes the other one by, until the other updates yet again and retakes the lead. Today, we see that DataViz has released Documents To Go version 2.0 that adds support for Excel on the iPhone. This is a FREE update for existing owners. We now have both apps supporting Word and Excel on the iPhone and it looks like the next hurdle is PowerPoint. I will have a comparison of the two Excel modules up later tonight or tomorrow morning so come back to see how they compare to each other.
Documents To Go version 2.0 adds support for creation and editing of Excel files (2007 & 2008 formats) and typing speed improvements. The Excel support includes support for iPhone cut/copy/paste, 111 functions/formulas, multiple worksheets, and more. One capability I have yet to see from either of these Office apps is charting support so maybe that will be the next additional feature.