This app allows control of your smartphone camera, using the same settings for both short-wave ultra-violet (SWUV) and long-wave ultra-violet (LWUV) illuminations.  The controlled settings are for exposure, ISO, color temperature and focus.  The two images can then be compared either through alternating views or using a slider.  Images with SW and LW labeling can be saved to your image gallery.
          
          
            
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