I have release a new version of the depth of field calculator for Android phones on the Android Market.
A few bugs have been fixed and two new features have been added:
If your camera isn’t in the list, just find its CoC value online and add it to the presets! Same for measurement units, if you don’t like metric or imperial system (I don’t know what system is used on Kronos or Discworld), add your own!
Please send me feedback for any new feature!