+1. Use it every time. I have been getting consistent developing with my negatives. Just wipe finger on towel and swipe iphone and tap the button. I can't imagine doing it any other way. Dilution mixer and time/temp adjustments are really easy.

Kent

Quote Originally Posted by Katie View Post
I use it every time I develop. I adjust times to my liking and save them ... it's REALLY handy. I keep it on the shelf about eye level in the darkroom and keep a fingertip dry (or just wipe it on my apron) or in a pinch, I have used my nose. I can only imagine what I look like using my nose to push buttons, but hey, it works.