If this is the best there is, the one we really want hasnt been written yet.
It works ok. I mean what can one do with a counter. Wish it could sync but it merely overwrites up to the cloud and you can copy back down which can get confusing using multiple devices. The alarms work but for a sound other than the default youll have to set each one. The graph is basic as you see in the example. Perhaps with ios8s new tools developers can do better with these apps.
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Water Alert Pro - Drinking Time Reminder & Tracker