Image Histogram helps you to get the maximum out of your phone's camera. Now you can open more than one image files and swipe left/right to choose between them.

With this app you can know whether your photo's exposure was right. You can get the most out of your raw files by exposing to the right (ETTR) and get the most image data possible for developing your DNG files.

You can also turn on highlight and/or shadow warnings (blinkies) to see blown out highlights and black shadows at a glance. You can set interval of blinking.

Histogram types available: RGB, red, green and blue color channels separately, color overlay, luminosity.