DStretch is a program for the PC and Mac that is used by rock art researchers to make faint rock art visible. This is a version for Android intended to be used in the field at a rock art site. Eight enhancements are provided together with settings that can adjust strength and saturation of the enhancements. Enhancements can be applied to a photo from the camera or from the gallery. The enhancements can be saved. For ease of use you can designate a default enhancement (I recommend CRGB) that is automatically applied when an image is loaded.
The enhancements are:
CRGB, YRD, YRE, RGB0: good for red pigments.
YDT, YRD, YWE: general purpose.
YDT, YBK, YYE: good for yellows.
See DStretch.com for more information on DStretch and the enhancements.
In addition to choosing the default enhancement, you can use the menu to set:
Scale. This is the strength of the enhancement.
Saturation. This controls the saturation of the enhancement. Set to 0 for grayscale, 1.0 for normal.
MPixel Limit. Android phones can have memory problems with large images. Set this to a low value to avoid crashes, to a high value to get higher resolution for enhancements.
Output Directory. This is where the saved enhancements will be put.
Toggle Diagnostics. Turn on to get diagnostic information.
Latest Version
1.36Requires Android
Category
Photography AppContent Rating
Everyone
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Flag as inappropriateLast updated on Apr 16, 2026
Minor bug fixes and improvements. Install or update to the newest version to check it out!
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