Friends
Users can add friends and send quick reminders, adding a small accountability layer to a habit that is easy to ignore alone.
Press resources
P App Press Kit
P is a free iPhone and Apple Watch water reminder app that helps people stay aware of hydration without logging every glass of water.
Quick Facts
Current facts for writers, editors, podcasters, and reviewers. When in doubt, use these numbers instead of older screenshots or archived specs.
Product
Free water reminder app for iPhone and Apple Watch
App Store
4.75 stars from 1,850 ratings
Downloads
145,000+ all-time downloads
Apple Watch
Over 40% of recent active users log from Apple Watch
Developer
Independent app by John Ganotis
Launched
April 5, 2016
About P
P is a water reminder app built around hydration awareness. Instead of asking users to measure every drink, it lets them log a visit in seconds when they go to the bathroom. P uses that output pattern to power reminders, streaks, and calendar views.
The idea is intentionally simple: remembering to track output is easier than trying to meticulously track intake. P is built for everyday water reminders, with quick logging from iPhone, Apple Watch, widgets, and watch face complications.
P also includes a Friends feature where people can add friends and send each other quick reminders. It gives the app a lightweight accountability layer without turning hydration tracking into a social feed.
People also use P as a lightweight bathroom tracker or voiding diary when they want to discuss patterns with a clinician, including patterns related to kidney stones, bladder symptoms, prostate or BPH concerns, UTIs, and other health questions. P is a general wellness product, not a medical device, and it does not replace advice from a medical professional.
Short boilerplate
P is a free iPhone and Apple Watch water reminder app that helps people stay aware of hydration without logging every glass of water. Built independently by John Ganotis since 2016, P turns quick bathroom-visit logs into reminders, streaks, calendar views, optional friend accountability, and bathroom-pattern data for people who want a simple voiding diary.
Contact: [email protected]
How P Works
The app is built around a low-friction water reminder habit that fits into the moment people already remember: walking to the bathroom.
1
Log a bathroom visit
Log a visit in seconds from iPhone, Apple Watch, a widget, or a watch face complication.
2
Stay aware of hydration
P shows timing, streaks, and calendar history so users can connect water reminders to their own output pattern.
3
Get practical water reminders
Reminders are based on the user’s actual pattern instead of a generic glass-count target.
Notable Features
Beyond the basic water-reminder flow, P has a few features that make it more distinctive than a simple timer or glass counter.
Apple Watch
More than 40% of recent active users log from Apple Watch, making wrist-based logging one of P’s most important product surfaces.
History and Context
Calendar views, streaks, notes, and optional exports help users understand their own patterns over time.
Country Flags
P keeps a flag collection for its users: log a pee in a new country, and that country’s flag joins the collection. It turns travel into a lighthearted hydration game and gives frequent travelers a fun stat to share.
Country Flags builds on P’s See Where You Peed map, which over 25% of recent active users have turned on. Because flags come from each user’s existing log history, people who have been mapping their pees for years, some for more than five, automatically received flags for every country already in their history.
Flags also tie into the Friends feature: users can choose to show their flag collection to friends, who see the flags but never any detailed location information.
The feature fits summer travel stories, quirky-app roundups, and Apple Watch travel coverage. The graphic here is available for editorial use.
Voiding Diary Mode
Voiding Diary Mode is a labeling change inside P, not a separate app. Turning it on shifts the app’s language away from water reminders and toward bathroom-visit logging, so people who are tracking for health reasons see wording that matches why they are using it.
In this mode P records the timestamp of each bathroom visit, an optional user-entered volume in mL, and free-text notes. Those entries roll up into the same calendar views, history, and optional exports P already offers, which gives someone a simple record to bring to an appointment instead of trying to remember weeks of detail.
The people who ask for this are usually already keeping a paper diary. Clinicians commonly ask patients to record bathroom visits over a few days, and doing that on paper is easy to forget and easy to lose. P is a phone and Apple Watch app people already have with them, and logging a visit takes about three seconds.
Staying well hydrated is one of the most established lifestyle associations in the research literature for lowering the risk of recurrent kidney stones, and hydration is linked to a range of chronic conditions in peer-reviewed work. P is built around that general-wellness idea: make your own patterns visible so you can act on them and talk about them.
Scope, stated plainly: P is a general wellness product, not a medical device. It does not diagnose, treat, or prevent any condition, it makes no clinical determination about a user, and it does not replace advice from a medical professional. What it provides is the user’s own record, in the user’s own words.
This fits bladder-health and urology coverage, including Urology Awareness Month each September, as well as stories about the gap between what clinicians ask patients to track and the tools patients actually have.
Press Coverage
Recent third-party coverage highlights P’s unusual but practical approach to hydration tracking.
WearableXP
“…the P Water app takes a completely new approach that is actually refreshing.”
Read the roundupMacSources
“Thoughtfully designed, highly intuitive, and tightly integrated with Apple devices.”
Read the reviewTechRadar
“It’s unbelievably simple.”
Read the featureLifehacker
“I tap a button on my Apple Watch when I’m heading to the bathroom.”
Read the articleStory Ideas for Producers
Ready-made segment ideas for TV, radio, and podcasts. Each one uses features already in the app, and John is available for interviews, demos, and quick screen-shares with your team.
The Host Challenge
Your hosts try P for a week and add each other as friends so they can send each other water reminders. Over the week they notice their own habits, find out who can stick with it, and discover how good it feels when a friend is thinking about your hydration during the day. The segment starts as a joke about a pee app and ends with someone admitting the habit stuck.
“I thought it was a joke. Then I used it for a week.”
One producer or host tests P for seven days and gives an honest on-air verdict. A theme that appears again and again in P’s reviews, 4.75 stars from 1,850 App Store ratings, is exactly this arc: downloaded as a joke, kept as a habit. John, the one person who has built P since 2016, can join briefly to explain why a quick tap on the way to the bathroom is easier than logging every glass.
A Flag for Every Country
P keeps a country-flag collection for travelers: log a pee in a new country, and that country’s flag joins the collection. It works as a light item in summer travel coverage, and the Country Flags graphic on this page is available for editorial use.
Product Assets
These images are available for editorial coverage of P. Please credit P or pwaterapp.com when practical.
Calendar View
Calendar view showing how P turns quick logs into a visible habit history.
Download JPG
Friends Feature
Friends can help each other keep hydration awareness from becoming a solo habit.
Download JPGPress Contact
For interviews, product questions, screenshots, or review access, contact John Ganotis directly.