Fixed a nasty rounding-bugg which occurred when the speed was twice the distance. The bugg resulted in the time calculated was off by one hour.
Find the app here: http://www.jonika.nu/NautiCalc/
Read more about the app here: http://jonika.nu/JonasBlogg/hobbyprojects/natuicalc
Tip: On iOS-devices, add NautiCalc to home screen (using the share-button in Safari) and the app should look just lika a native app and also run without internet connection.Follow jonlin76