I downloaded both Keynote and Docs to Go. I have not had any of the crashing issues that others have expressed concern about with Keynote. However, I have only opened a select few ppt documents in the program--not enough for a good review of its performance. I don't care for the way Keynote handles notes added to slides--it will not display the notes alongside the slides. Docs to go, on the other hand, enables notes to be viewed alongside the slide--this is great for studying.. especially in and art history type class where you are taking notes on slides of artwork.Not sure why the reviews on iTunes might be bad but I use keynote on the iPad all the time and it works great for me.