AquaChek Test & Treat by Hach

Won't take a pic

Junk. Won't take the picture and I tried a few dozen times.

This don't work, never takes a photo to analyse

Good concept but bad design: every time you start the app you have to scroll through all the set up parameters. Even worse is that it's virtually impossible to line up the test step for a successful photo. Following their instructions to the letter I am successful about 1 time in 20.

Worked well when used twice. But Now keeps crashing when you attempt to go to advice page.

Does the job, but how do you check measures history without creating a new entry? That's a really dumb UX... Too bad.