Works just fine like the website. My pool works great, does the same thing as the website (free) but the app is definitely much more convenient to have
Does not work It is annoying as the input data is very limited and does not work
06/25/13 Update to correct one error.
06/19/13 Update to correct errors found when lowering pH by 0.1 unit when CYA is 100. This error should not have affected most users because most users want to lower pH by more than 0.1 unit.