8 Best Water Reminder Apps for Apple Watch and iPhone

I was sitting on my couch at 6 PM last night, feeling tired with a little headache. I look at my Apple Watch, my activity rings were closed, my step count was good Breathe app has nudged me three times. My watch was happy with me, yet I felt like something was missing.

Then I remember I hadn’t had a single drop of water since my morning coffee. My watch cared about my steps and my heart rate, but it didn’t seem to care that I was basically dehydrated.

That was the exact moment I realised that while the Apple Watch is a health powerhouse, its biggest negative point is that it lacks water tracking. I spent the next few months testing so many Apple Watch water reminder apps that work on the watch and my iPhone. After a lot of trial and error and many washroom trips, I’ve found some that actually work.

Why Hydration Reminders Work

We all think that our brains are smart enough to tell us when to grab a glass of water, but let’s be honest, it’s 2026 and our attention is pulled in thousands of directions between back-to-back Zoom meetings and that infinite scroll on social media apps. Your brain basically puts thirst at the bottom of the priority list. Usually, by the time your body finally screams for water.

I used to rely on my memory. I’d tell myself that I’ll drink a glass after this email. Three hours later, that glass was still full. Phone notification didn’t help much either, I’d just swipe them away like an annoying flying bug.

The game changer was using Apple Watch water reminder apps. There is something about a gentle vibration on your wrist that is much harder to ignore than a sound from a phone across the room. It feels like a digital nag and more like a friend tapping you on the shoulder. Plus, logging a drink on your wrist takes two seconds, literally. No more unlocking your phone only to get distracted by Instagram.

Best Water Reminder Apps for Apple Watch and iPhone

I’ve used these Apple Watch water reminder apps for weeks. I judged them on how easy they are to use when I’m busy, how good they look on the watch face and whether the pro features are actually worth it or not.

1. Waterllama

Price: Free, with optional subscription

If you want an app that feels like a celebration every time you take a sip, Waterllama is the one. It is incredibly vibrant and uses an animal llama to track your progress. It’s not just about water, it also helps you to track nearly 40+ types of beverages, but for that, you need to pay for the subscription. 

I personally loved the challenges feature. I did the 10-day hydration challenge and saw a little llama appear in different outfits whenever I completed my milestones, which genuinely motivated me to drink another glass of water. 

2. Plant Nanny Cute Water Tracker

Price: Free

If you find standard charts and progress bars a bit boring, Plant Nanny turns hydration into a digital pet game. The concept is simple but effective. You have a small, adorable plant that needs water to grow. Every time you drink a glass of water and log it in the app, you are also watering the plant. If you forget to drink, your plant starts to die.

For many, the guilt of seeing a sad digital plant is a much stronger motivation than a standard notification. As you stay consistent, your plants level up and evolve and you eventually unlock a whole garden of different species.

You get to name your plants and choose which species to grow. I named my first cactus Spike and honestly, the guilt of seeing Spike look thirsty was a much stronger motivation for me than any standard health notification.

3. Water Minder

Price: 

$2.99 USD / month (Subscription)

$7.49 USD / year (Subscription)

This is the one I keep coming back to because it feels like it was built by Apple itself. The app uses a simple visual of a human silhouette that fills up with blue liquid as you drink water. It sounds simple, but seeing that empty person at noon is a huge motivator. You can see your drinking water percentage right on your watch face. 

You can customize the character in the app to match your body type, and even change the app icon to match your watch band or iPhone wallpaper.

4. P Water app

Price: Free with optional subscription

While other apps give hydration reminders in a way that can get annoying very quickly, the P Water app takes a completely new approach that is actually refreshing after using others that ping on you every hour. Instead of tracking how much water you drink, P prompts users to track your visits to the loo. And here lies the best thing about the application: its integration with Apple Watch. One click on the watch tracks your visit to the restroom without taking your phone out. Now I started clicking my wristwatch while going to the restroom to remember later to register the action on the desk. The coolest feature is being able to ask Siri to register a pee for me rather than opening an app and clicking the corresponding button.

Apart from just logging your water consumption, P also adds streaks, friends reminder and “Log Old Pee” to help you make up for lost time if you happen to forget in the moment. The reminders will never come across as nagging. In fact, there have been occasions where I’ve been reminded that I need some water only because I hadn’t peed in a long time. For those who have tried and failed with other apps simply because of tedious manual logging, P is worth a spot on your Apple Watch home screen via their watch face complication.

A premium plan adds individual pees, calendar view for past months, Stealth Mode, export to CSV format, customizable app icons and more fine-grained control of reminders and snoozing. It is available on a monthly, annual or lifetime basis, with Family Sharing available for all subscription types.

5. Hydro Coach

Price: 

$2.99 USD / month

$19.99 USD / year

It is for the person who loves data and hates the one-size-fits-all approach. Most apps just tell you to drink two liters of water, but Hydro Coach takes a deeply personalized path. It calculates a very specific goal for you, based on your age, weight and even the weather. 

What really sets it apart is how it handles your day-to-day water intake goals. If you have an intense workout or if the temperature outside spikes, the app adjusts your targets in real-time.

This data-driven approach was a game-changer for my afternoon slum. Instead of a normal drink water ping, the app sends me reminders precisely when I am falling behind my daily target.  You do need a premium subscription for logging water intake via Apple Watch.

6. Drink Water Reminder

Price: 

$0.99 USD / month (subscription)

$5.99 USD / year (subscription)

Sometimes you just want an app that does one thing and does it well without any unnecessary things. Drink Water Reminder is the simplest choice.

It is a very straightforward iPhone and Apple Watch water tracking app. You just need to set up your intervals and it pings you. There aren’t any fancy hydration characters or deep social sharing features. It also has big buttons, which is great if you are trying to log a drink while running on a treadmill.

You can fully customize the notification sound and message titles. I changed my alerts to say Drink now!, a bit of self-love that actually made me grab my bottle every time it buzzed.

7. My Water

Price:

$0.99 USD / month (subscription)

$2.49 USD / three months (subscription)

If you care about aesthetics, then My Water is the prettiest app on the list. It tracks 19 different types of beverages, so if you are drinking soup or even milk, it counts those toward your water balance using specific hydration ratios.

The Apple Watch’s My Water app interaction is top-notch. It was one of the first apps to support the Apple Watch. It lets you create custom drinks with their own hydration coefficients. Since I drink a very specific brand of electrolyte tea, I was able to add it as a unique option, so my tracking stayed 100% accurate as per my lifestyle.

8. Water-Reminder Daily Tracker

Price: Free with optional subscription

If you are looking for an app that balances deep functionality with a clean, minimalist interface, Water-Reminder Daily Tracker is a standout choice. It is designed specially for those who want a structured hydration plan without a cluttered UI.

What makes this app particularly useful is its schedule feature. Instead of just sending random pings, it allows you to set a clear start and end time for your day, so your watch isn’t buzzing while you’re trying to sleep. 

Note: The free version will simply track your water intake and it also provides you with reminders. To add more data type options like caffeine, protein, dietary energy, fat and sugars, you need to pay for the subscription for 1 year or for one month. 

How I Set Up My Apple Watch for Maximum Hydration

Using a third-party app is the only solution. Let me give you some pro set-up advice that helped me go from 1 litre a day to 4 litres a day.

• Put the water tracker as a complication on your watch face. If you have to swipe to find the app, you won’t use it.

• Set your reminder for 15 minutes after you wake up. Drink a full glass before your coffee. It changes your whole day.

• I set my app to vibration only during work hours. I don’t need my phone screaming at me in a meeting, but a quiet tap on the wrist is a perfect cue to sip.

Wrap Up

If I had to choose just one water reminder app for Apple Watch and iPhone, it would be Waterllama. It is just too easy to use and the visual of the cute little llama filling up satisfies the brain in a way no other app does. It feels like a natural part of the Apple ecosystem.

However, if you are just starting out and don’t want to spend money, Plant Nanny Cute Water Tracker is a great way to test the waters without a commitment.

Staying hydrated is a small habit, but man, does it make a difference. My skin looks better, my 3 pm slump is gone and I’m no longer a piece of human jerky. Pick one, set your goal and let your watch do the reminding for you!

We’ve also compiled a list of the Best Apple Watch Heart Rate Monitor Apps in 2026.

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