Apple on Thursday updated its App of the Week promotion with the app WaterMinder. This means that for the next 7 days, you’ll be able to pick up the popular hydration tracker for free on both iPhone and iPad—a nice savings of $3.

For those unfamiliar with the title, WaterMinder reminds you to drink water and helps you track your intake. Based on your body weight, the app suggests how much water you should drink on a daily basis, and helps you hit that mark.

From the App Store Editors’ Notes:

Thanks to WaterMinder, staying feels less like a chore and more like a fun game we look forward to. Knowing we’ll earn achievements for meeting our daily goals keeps us motivated to follow the reminders and drink up. And because WaterMinder tracks other beverages too (coffee, juice…even beer!), it’s helpful no matter what we’re doing.

And here’s a clip of the app in action:

WaterMinder is available in the App Store for free.

  • Or just use the native app in your body, THRIST.

    • SpideyRules

      Thirst is your body telling you it’s running on empty. You’re never supposed to let yourself get to that point. So this idea is dumb.

      • Marcus

        Same idea with food. You’re not supposed to eat only when your stomach is growling.

      • BrS

        And that’s why you drink when your body signals thirst rather than waiting until it signals genuine dehydration.

      • rockdude094

        I wonder how early civilizations survived without these extremely useful apps… no wonder they didn’t survive poor chaps

      • looool

      • One thing to keep in mind is that the diets we eat today contain more fats and sugars than early civilizations would have and both of these things are known to suppress thirst.

        But you’re right! Passing on this app won’t kill you or anything but it could help establish good habits (that are shown to affect mental performance and overall health) and there’s nothing wrong with that 🙂

      • I don’t know where you get that interpretation from. “Thirst is the craving for fluids, resulting in the basic instinct of animals to drink. It is an essential mechanism involved in fluid balance.” That doesn’t translate into extreme dehydration to me.

      • SpideyRules

        You really need to learn how to use Google since school didn’t work for you.

        This is not an ‘interpretation. What I stated is fact. The human body should be at the highest level of possible hydration at all times for maximum functionality. Obviously, that’s not realistic, however ‘thirst’ and ‘hunger’ is the body telling you are running low on necessary nutrients.

        It’s like your plants. You don’t wait until they start to die before giving them water. You water them every day to keep them healthy. The human body is the same way. Keep it hydrated as much as possible.

        Your science lesson for the day is over.

      • igorsky

        Don’t waste your time trying to educate him as he clearly has it all figured out.

      • SpideyRules

        As well as the 3 sheep following him…lol

      • @SpideyRules:disqus My opinion is based on my own experiences of course. I didn’t expect it to be the same for everyone.

        Also again you’re taking my comment as if thirst or hunger are the extreme indication you’re nearly dying, you brought that up not me.

      • SpideyRules

        Learn how to read also. I never said anything was extreme.

      • BrS

        Maybe you’re getting dehydrated.

      • BrS

        Well apparently school didn’t work for you.

        And yes, exactly like plants you use the thirst signal to take in fluids. You don’t wait until you’re actually dehydrated.

      • SpideyRules

        Congrats on repeating exactly what I said in my original comment…lol. I would say school didn’t work for you, but it seems obvious you didn’t even go.

      • BrS

        Utter nonsense. If you think that sensation of thirst is your body running on empty I suggest trying out real dehydration, then you’ll know the difference.

      • SpideyRules

        I love when idiots call scientific fact ‘utter nonsense’…lol

    • Hey Oscar,

      While it is true that you should always drink when you’re thirsty, the absence of thirst doesn’t mean that you should stop drinking. Did you know for instance that the presence of fats and sugars in our diet can significantly suppress our thirst?

      There are plenty of studies in fact that show that over 75% of people are in a chronic state of dehydration (and this goes up to 90%+ among the elderly). Turns out a lot of people often don’t drink when they are thirsty (according to scientists at Purdue) and most of their hydration comes at meal times. Even athletes in some studies were discovered to often only replenish 30-70% of the water lost in exercise with what they drank.

      Depending on your diet and how well you actually respond to your body’s thirst mechanism will determine if something like this will be useful, but if you’re anything like me (I get very focused on work), I often realize I’m thirsty and decide to go get something to drink after I finish something quick and one thing leads to another and 2 hours or more later I still haven’t had a drop of liquid. Sometimes having a little reminder can be helpful 🙂

      Hope that explains it a bit,

      • Hey, thanks for the info. I guess I was looking at it far too simplistic. In your examples this app can definitely help out.

        I was just basing my comment on my own experiences though. I tried for a month or two to drink the recommended amount of liquid, and felt no difference then drinking whenever I noticed I was thirsty. And the whole ordeal of gulping down a lot of liquid was rather torturous in my experience.

        And thanks for being so civil.

      • BrS

        The recommended amount is not based on any science. And what most people don’t realise is that drinking more than the body needs doesn’t provide any benefit, unless going to the toilet more often is considered a benefit.

        The claim that 75% of Americans are chronically dehydrated is a myth.

        Sugar should actually stimulate thirst.

        The body’s thirst mechanism is highly developed, will kick in long before there is any risk of harm and of course the human body is also well adapted to handling a temporary fluid deficit. If these things were not true the human race would never have survived. The claim that modern diets are preventing us from knowing when to drink is pure bunk.

      • BrS

        It should also be noted that athletes replenishing 30-70% is not an indication of the failure of their thirst signals, but more likely the simple fact that it often is not possible to replace fluid as fast as it is lost while exercising. They’ll then replace it, because their body will tell them they need to, after the fact.

        There is actually no real danger in a slight fluid deficit. There are some possible risks to ingesting too much fluid, like electrolyte levels and interference with kidney function, that water junkies seem to prefer to ignore.

    • BrS

      Absolutely, it is a wonderful, fully functional mechanism. Somehow a lot of people have bought into the myth that we can’t tell when we need fluid, that we need huge amounts everyday and that most people are walking around permanently dehydrated.

  • nova12

    been using it for months. I like it a lot. Has helped motivate me.

  • Too bad for Apple, this App was already free a lot of times before, they are giving away things that are meant to be already free ¬.¬ sorry Apple but for me you start to suck

    • igorsky

      Congrats on going from great post to worst post in the same thread.

  • I just hope that they develop an app in the near future for food, sleep and sex

    • SpideyRules

      “I just hope that they develop an app in the near future for……sex”

      Said every man ever….lmao

    • BrS

      I know, otherwise how will we possibly know when to eat or sleep.

  • Martynet

    Maybe it could be useful for people on drugs who forgot to drink water when on extasy…

  • BrS

    I use the app built into my body.