As advertised – 1 Gallon a Day Review

Pros: it functions as advertised, it's nicely designed- it's simple and attractive, notifications actually help me reach my goal. Cons: does not share data with the iOS Health app, keeps sending you notifications after you've met your goal, if you pay the $2 for the extra features and view your history it only displays days where you met your goal without mention of what your goal was or how much you drank on days you didn't meet your goal.
Review by Apparently terrible driver on 1 Gallon a Day.