I've actually been a little disappointed with Skyscape/Archimedes for iphone. There's nothing wrong with the content, but the navigation just seems more complicated than it should be. Instead of some of the other medical calculators that are available where you tap the variable you want to enter and a number pad pops up, you have to tap in the variable's box, then the letter keypad pops up, so you have to tap again for the number pad (and then it's the keypad number pad instead of the phone number pad which is much bigger). I know it's only one extra tap, but the whole thing is just really a poor set up - relatively speaking. Navigation for RxDrugs and OCM is also not consistent with your typical iPhone program. Once again, there's nothing wrong with content, but it's almost like a higher priority was placed on consistent appearance with Skyscape versions on other OSes instead of taking full advantage of what the iPhone excels at.