Agreed, especially if you are using this app a lot, number of steps is more important than any aesthetic. More apps need to take this into account. I like it and look forward to seeing if you can find any other ways to simplify the conversion action.
nabbed it, awesome thanks! App works great. I admit the number of touches and simplicity of the UI makes this a nice standalone utility. Its a little hard to be specific with the UIPickerView, but thats not exactly anything easy to fix. It would be interesting to see if there was a better UI component for selecting the units.