Robin Good: The DSLR Filmmaker Toolkit is an iPhone app which allows you to organize, track, set and measure your shooting-related tasks right from your iPhone.
Key features include:
Digital SlateShot LogViewfinder (can emulate different HDSLR cameras)Depth of Field CalculatorDaylight TimesDigital Level
Uncovered by: http://hdslrnews.planet5d.com/
More info at: http://www.dslrtoolkit.com/
Available in the App Store: http://itunes.com/apps/dslrfilmmakertoolkitat $7.99
Via Robin Good