Colorimeter is a multimedia application designed for iPhone that serves as a professional color picker. Users can easily capture colors by pointing their camera at an object and tapping on the video feed, which then displays the selected color in HTML hex code along with its RGB components. This functionality is particularly useful for designers, artists, and anyone needing precise color information.

One of the standout features of Colorimeter is its low light compatibility, which utilizes antialiasing rendering to minimize noise in the video image, ensuring accurate color representation even in challenging lighting conditions. Additionally, the 'WBal Lock' button allows users to lock the white balance, providing unmanipulated colors as they appear in the real world, thus enhancing the accuracy of color selection.