Good app, lots of room for improvement
Ill start by saying that, ultimately, I deleted the app from my phone... mostly because I found I actually do a pretty good job of keeping myself hydrated. This make logging my liquid intake and the reminders to drink water pretty annoying after a few weeks (even when I reduced frequency).
There are a few tweaks that I think would make me more likely to keep the app or reinstall it in the future.
1) Allow the user to make presets that arent water! I make and consume the same amount of coffee daily, adding this in is tedious and annoying - especially given point 2.
2) Change the volume input selection. The slider with decimal points makes picking the proper volume annoying. Either manual input through a keyboard or a scroll selection (think setting the time on the iPhone or selecting the beverage type) would be a huge improvement in terms of usability.
3) Smarter reminders! Im not sure of the feasibility of this, but if there was some way to make reminders only pop up when Im falling short on my goal or havent recently logged a drink would make me more likely to input my drinks and less annoyed with the reminders.
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Water Tracker: WaterMinder, v3.1