More iPhone apps to improve your photography!

I have found I am using the iPhone for imaging more and more these days..   No, it hasn't replaced my D3, nor will I use it for birding..  But is it a great tool for documenting lighting setups for future reference, for making an image of a shooting location that was or might be particularly rich in photo opportunities and even for an occassional portrait or location shoot.  Here are a few more apps I find particularly useful...

Hit the jump for more...  (that's the Read More link below...)