Lets you count the amount of glasses to drink everyday.
You can LMB on plus or minus signs to change value, or you can use +, up arrow or right arrow to increase value and -, down arrow or left arrow to decrese value. It is as simple as that. Thanks to localStorage you can check your stats in time by date. After opening menu you can clearly see a percentage indicator of drunk water. Aim for 15 cups!
And remember, stay hydrated!