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 45% 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 tap once 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
Tap once 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 45% 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.
Press Coverage
Recent third-party coverage highlights P’s unusual but practical approach to hydration tracking.
MacSources
“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 articleProduct 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.