Your iPhone takes pretty pictures, sure, but it doesn't really tell you much abou them. Lab will show you resolution, ISO, aperture and shutter speed for your shots, as well as when and where you snapped them.
What is it?
A pretty app for finding out all the stuff your iPhone doesn't tell you about the photos it takes - how big they are, in pixels and in megabytes; when they were taken; where they were taken; their aperture, ISO and shutter speed information, etc. All that is served up for every photo in your Photo Roll with a nice clothesline interface, a map for where the photo was snapped, and a histogram for a quick exposure overview.
Who's it good for?
People who take iPhone photography seriously; people who dump their photo collections onto their iPad to share with others.
Why's it better than alternatives?
It takes one thing—uncovering the hidden data stored in your photos - and does it well. The interface is nice and clean, and the app reliably yanks out as much photo information as can be expected. The map and histogram provided for each photo add a nice visual touch. And, hey, it's only a buck.
How could it be even better?
Sometimes the clothesline view can slow down the scroll through bigger Photo Rolls, and the app doesn't currently have support for photo albums (though apparently it's coming soon). Photos that have been processed with one of the many filter/effects apps lose much of their embedded data, though that's not really Lab's shortcoming.
For more apps, check out our weekly app roundups for iPhone, iPad and Android
Video music: Kevin MacLeod