For Apple, Droid, Linux, Windows or anything else - Google docs has free spreadsheet and word processing applications. You use them and store them at Google. When you want someone to see them, you send a link. My son uses them all the time to send me Christmas lists and other stuff! You don't have to be tied to any operating ssytem that way.
Since it is highly unlikely that Santa is bringing an Ipad to my house, I will buy one after the holidays. Someone told me that I missed a QVC deal yeasterday with 5 easy pay. Darn.