Here are two apps I’ve recently discovered for the ipod touch and iphone

These are going to save you from doing the math in your head out in the field.

ND Timer

http://itunes.apple.com/us/app/ndtimer/id390568001?mt=8&ls=1

…and NDCalc

http://itunes.apple.com/app/ndcalc/id300699192?mt=8

I just uploaded ND Timer.  I am looking forward to putting it to use. If anyone has these apps and has advice, an opinion, or a review to share please do!

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