I have a spreadsheet I developed in Excel 2011 (Mac) and then converted to Numbers09 on the laptop. It doesn't have complicated formulas, but its overall use depends on conditional formatting and drop down (or pop-up, as the case may be) selection menus for data in certain cells. Without those two functionalities, it really can't function. The Numbers ipad version drops both of these functions and I have not been able to find any other app that supports them.
Any suggestions? Oh - mine is an iPad 1 and is not jailbroken. Thanks.