44 bathroom trips later: My unfiltered thoughts on the P Water app

Homescreen Heroes: P Water is a simple way to track hydration without counting ounces

22 Mar 2026, 18:00 · TechRadar

Features By Paul Hatton published 22 March 2026

(Image credit: Future / Paul Hatton)

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In an attempt to build better hydration habits, I began using the Waterllama app. That was over a year ago, and after getting into healthier routines, I’ve not thought too much about it since. That was until I stumbled across the P Water app, which promises to simplify the tracking of hydration by logging and analyzing the frequency of your peeing.

Now I don’t know about you, but I’m not the sort of person who goes around talking about my peeing habits. It’s not the subject of conversation that comes up when I’m with friends or at the dinner table with my family. But I was intrigued enough by the concept to download it and give it a go.

44 pees later, and I’m now not only more at ease with talking about my bathroom trips but also convinced how helpful it is to have a simple app to help keep your hard-formed hydration habits an ongoing part of your daily life.

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Homescreen heroes

This is part of a regular series of articles exploring the apps that we couldn't live without. Read them all here.

Now you might be wondering how helpful peeing habits are to tracking whether you’re staying hydrated. Well, P Water points to a number of different research articles to back up its claim that pee frequency is a good measure for this, including the Void Frequency Reliability Across Hydration States study by Tucker et al. in the European Journal of Nutrition.

(Image credit: Future / Paul Hatton)

How does it work?

It’s unbelievably simple. All you have to do is tap the ‘Log Pee’ button when you’re on your way to pee, and P Water will build up a picture of your pee frequency. It doesn’t ask for or need any information regarding your pee, so the process of making a log literally takes two seconds.

To make logging your pees as simple as possible, you don’t have to even open the app. Simply add the P Water smartphone widget to log your pees from your homescreen or use an Apple Watch for an even simpler process. I even read about someone using their HomePod to log their bathroom trips.

With this data, P Water can then work out if you're drinking enough. It is this vital bit of information that enables the app to send you water reminders when your body needs them most. These are standard notifications that will appear on your phone, smartwatch, or other compatible devices so you'll never miss that little nudge to drink some water.

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