Even the newer smartphones from Samsung and HTC don't produce [in my opinion] photos as beautiful as the ones taken with an iPhone (4s or 5). But like many, I end up with hundreds of photos on my iPhone and finding the one I am looking for is a daunting task.
Viewfinder is a new free app that aims to improve your photo organization experience [on the device] by leveraging the hidden data in each photo called metadata. Metadata says when the picture was taken, where it was taken, how it was taken, etc.
It indexes all of this wonderfully useful metadata then let's you easily search for photos using it. In addition to organizing your photos, it also allows you to easily share those photos with friends and family.
I say this is a definitely try. Download it here.