Very handy!
I was looking for something that would allow me to point my iPhone at something and find out the closest standard color for a color I was trying to identify, so that Id have something objective rather than just my subjective guess at the color (or just a RGB or CMYK value, which isnt much better). This app fits the bill perfectly, allowing me to find a Pantone color that closely matches the color Im looking at. Of course I know that its not the same as calibrated color measurement under controlled conditions, but its a zillion times better than just trying to guess things by eye. Lots of other cool features too that Im still exploring.
Mxsmanic about
PANTONE Studio, v2.3.1