Neutral Density Calculator for Windows Mobile phone
Check this out, if you don't have an Iphone but do have a Windows Mobile or PDA like myself.
A friend of mine "Dan" (bit of a programmer) has sat down and I explained to him how painful it was to lug a sheet with time settings for neutral density filters on around. With this Dan got to work and developed this application for me. I have tested it and with bugs now fixed and new features I felt it was time to share. It is free, all I ask is that you leave some pleasant feedback for Dan.
Download the cab file using the download link on the site. Attach your mobile to your pc and copy this cab file over. Locate the file using the windows mobile device and run it. Once installed open the program and it's ready to go. More details on the website link provided.