Nitpic

Nitpic is the exciting new tool for pro-photographers and hobbyists alike. DSLR owners know the frustration of sorting through thousands of images after a photoshoot. It's boring. It's tedious. It's slow. But Nitpic takes advantage of your device's intuitive interface to do what other professional apps have failed to do so far: make it quick, streamlined, and intuitive. With Nitpic, sorting photos has never been easier!
Nitpic links up with the Nitpic Desk companion app over Wi-Fi or Bluetooth (now available, free on the Mac App Store). Then it loads all of your images into a simple and intuitive interface. Sort and cull your photos by swiping. Zoom in and check tiny details by pinching. Nitpic offers two sort modes:
Rating mode (for photographers who like to use the 5 Star rating system):
• Tap, hold, and slide right or left to assign a rating between 1 and 5 stars
• Tap and slide left from the right side of the screen to undo the previous rating
• Pinch to zoom in and out​
Swipe mode (for photographers who like to sort their photos into keeper and reject piles):
• Swipe right to sort into Keeper folder
• Swipe left to sort into Reject folder
• Tap and slide left from the right side of the screen to undo the previous rating
• Pinch to zoom in and out
All sorting is NON-DESTRUCTIVE. No photos are altered or deleted in the sort process. Once you’re done, you can move your photos into your photo library of choice in a quick and orderly fashion and apply your ratings accordingly.
Nitpic is currently compatible with RAW (CR2, NEF, etc) TIFF, JPG, PNG, PSD, and others!