Comparison

Water Reminder vs Bladderly

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Water Reminder

This app helps you stay hydrated by reminding you to drink water based on your body's signals, rather than just tracking intake. It offers customizable notifications and integrates with Apple Health, providing a simple way to build healthy habits and monitor your well-being.

Highlights
  • Drink water reminders based on body signals
  • Apple Watch and Lock Screen widgets
  • Customizable notifications
  • Apple Health integration
  • Hydration calendar (pee count)
  • Data export and social features
Features
Read full description

P is a water reminder for iPhone and Apple Watch that doesn’t make you log every glass. You log a bathroom visit in seconds, and P reminds you to drink water when it’s been a while. P tracks output, not intake: peer-reviewed studies support 24-hour pee frequency as a practical hydration indicator in healthy adults. P also works as a bladder diary to track how often you pee: log each bathroom visit from your iPhone or Apple Watch, add notes, and keep a record to discuss with your doctor. It’s great for Apple Watch or as a Lock Screen Widget, and not as complicated as a water tracker. Who wants to use an annoying, complicated water tracker to drink water? Up your hydration game with this app! Try it out, and see how this drink water reminder app can keep you aware of your body. Key features: - Drink water when your body needs it most, instead of based on just water intake - Great Apple Watch app: Put it on your watch face for fast access while you head to the restroom! - Customizable drink water reminder notifications - Apple Health integration - Lock Screen widgets - Home Screen widgets - Hydration calendar (pee count per day) - Add notes on pees - Volume tracking: record void volume in mL or oz for a complete voiding diary - See Where You Peed: include location on pees for a low-effort journal of your life - Tell Siri to “Log a P” - Data export as CSV - Supported by scientific research - Add friends so you can remind them to drink water - Earn your scroll: Water Break blocks apps you choose until you take a sip of water If you’ve ever had a UTI or kidney stones, you know how important it is to drink water. Hydration is so important! There can be many benefits of drinking water, like weight loss, healthy skin, mental clarity, and much more. Dehydration can hold you back from being your best self. Now it’s easy to know when it’s water time. This hydration app gets you in tune with your body, especially when you need to drink water most. P is like a fitness game, taking the water tracker concept and turning it around, so you don’t need to track water intake. It’s a much simpler free water drinking reminder app. Don’t break that streak! You can even see where you stack up against the streaks of other users on the Leaderboard. Even though P is designed to help you drink water as a hydration app and water drinking reminder app, you may also want to use it as a simple pee tracker or bathroom tracker. With volume tracking, P supports proper voiding diaries that medical providers request. This can be helpful for tracking data related to prostate conditions, bladder conditions, avoiding UTIs, avoiding kidney stones, and more. Remember, this is not a water tracker! There is no way to record when you drink water, or how much water you drink. Instead, it’s a hydration app based on how often you pee! Join the many happy users who have used P to drink water and monitor their hydration based on how often they pee instead of a water tracker! P does not provide medical advice. It is not intended to diagnose or treat any medical conditions. It’s just a fun way to remember to drink more water or track your pees. Ask a licensed medical professional if you have any questions about: - kidney stones - gout or other types of inflammatory arthritis - prostate conditions, or BPH - interstitial cystitis and bladder conditions - urinary tract infections (UTI) - getting well-hydrated to prevent hangovers - pelvic floor training and Kegel exercises to control urinary incontinence - postural orthostatic tachycardia syndrome (POTS) P includes optional subscriptions. Subscriptions are charged to your App Store account and renew automatically unless canceled before the current period ends. You can turn off auto-renewal in Settings after purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ P was formerly called Pee & See.

About

Bladderly

This app simplifies bladder diary tracking, replacing paper logs with an easy-to-use digital experience. It helps users consistently record bathroom visits and timing to identify patterns, aiding in discussions with healthcare providers.

Highlights
  • Digital bladder diary replacement
  • Easy and consistent logging
  • Log bathroom visits and timing
  • Optional sound-assisted volume estimation
  • Clear, organized records
  • Privacy-focused design
Read full description

Bladderly is a smart bladder diary app designed to make daily tracking easier, more consistent, and more complete. Bladder diaries are often part of clinical bladder care, but paper logs are difficult to keep up with in daily life. Entries are frequently missed, estimated, or incomplete, limiting how useful they can be over time. In clinical bladder care, bladder diaries are widely used because they provide structured, time-based records that help clinicians understand patterns over time. When completed consistently, diaries can support more informed discussions and better decision-making during care. Bladderly was built to help bridge this gap between clinical guidance and real-world use. ■ Designed for real-world compliance - Replace paper bladder diaries with a simple digital experience - Reduce missed or incomplete entries during busy daily routines - Make it easier to log consistently over days and weeks Bladderly fits naturally into everyday life, helping turn bathroom routines into structured records - without adding friction. ■ How Bladderly works - Log bathroom visits and timing with minimal effort - Supports manual entry and offers optional sound-assisted logging to help estimate voided volume - Organizes entries into clear, easy-to-review records - Designed for privacy and discreet daily use Bladderly works whether you prefer simple manual tracking or more automated logging. ■ Built for patterns, not pressure Consistent diaries make it easier to notice habits, timing, and patterns that are hard to recall from memory alone. Bladderly focuses on helping users complete bladder diaries more reliably - creating a stronger foundation for future conversations and insights. ■ Trusted by thousands Over 25,000 users globally trust Bladderly, logging over 1.3 million individual measurements. This extensive volume of logged data provides reliable insights you can trust while demonstrating remarkably strong real-world adherence in a category where compliance is often challenging. ■ Looking ahead Structured, consistent diary data opens the door to deeper understanding over time. While Bladderly currently focuses on tracking and record-keeping, future features may explore educational and supportive insights based on diary patterns. Bladderly is designed to support tracking and record-keeping, not diagnosis or treatment. It helps bring clarity and structure to bladder diaries - on your terms, in everyday life. -- Subscription Details Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your Play Store subscriptions. Read Terms of Use: https://www.bladderly.com/terms-of-use Read Privacy Policy: https://www.bladderly.com/privacy-policy

Screenshots

Water Reminder4 screens
Bladderly4 screens

Verdict

The call

The clearest difference is monetization model: Water Reminder at free with in-app purchases against Bladderly's subscription. Water Reminder also leads on update cadence (every 6 days vs every 5 weeks) and rating (4.8 vs 4.5). Bladderly's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Water Reminder sells 7 in-app purchases, starting at $4.99 per month and Bladderly sells 8 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Water Reminder holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Water Reminder has 1.9K ratings behind it against 206, so its average is the more settled of the two. Written reviews point the same way: 88% of Water Reminder's written reviews are positive against 79% of Bladderly's.

UpkeepUpdate frequency

Water Reminder ships an update every 6 days, Bladderly every 5 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Water Reminder versus Bladderly: the parameters behind the verdict, then further details
ParameterWater ReminderBladderly
PriceFreeFree
Rating4.8 (1.9K ratings) — better4.5 (206 ratings)
Positive reviews88.5% of reviews — better78.7% of reviews
Number of ratings1.9K — better206
Update frequencyEvery 6 days — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size98 MB124 MB
Age rating9+17+
DeveloperGanotis Holdings, Inc.Soundable Health, Inc.

Customer experience

Water Reminder

All ratings1,938 ratings
Positive94.8%
Neutral3.0%
Negative2.2%
Written reviews226 reviews
Positive88.5%
Neutral4.4%
Negative7.1%

Bladderly

All ratings201 ratings
Positive88.6%
Neutral6.5%
Negative5.0%
Written reviews47 reviews
Positive78.7%
Neutral6.4%
Negative14.9%

Bugs and requests

Water Reminder

Reported bugs

3 issues
  • Apple Watch app not working after update
  • Pee data disappearing after update
  • Inconsistent time tracking between app and widget

Requested features

4 requests
  • Add ability to track urine color and volume
  • Pause tracking during sleep
  • Customizable hydration targets
  • Export data to other health apps

Bladderly

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Water Reminder

Subscriptions2
  • Monthly Subscription$4.991 Month
  • Yearly Subscription7 Days trial$39.991 Year
One-time5
  • Streak Lie: 7–29 Days$0.49
  • Streak Lie: 30–59 Days$4.99
  • Streak Lie: 60–89 Days$8.99
Show 2 more
  • Streak Lie: 90+ Days$19.99
  • Lifetime Access$119.99
8 purchases

Bladderly

Subscriptions6
  • Monthly$4.991 Month
  • Monthly3 Days trial$4.991 Month
  • Monthly3 Days trial$9.991 Month
Show 3 more
  • Annual$24.991 Year
  • Annual3 Days trial$24.991 Year
  • Annual3 Days trial$69.991 Year
One-time2
  • PDF Export Once$1.99
  • 3-Day Pass$4.99

Questions

Is Water Reminder free?
Water Reminder is free to download, with in-app purchases available.
Is Bladderly free?
Bladderly is free to download, with in-app purchases available.
Which has better reviews, Water Reminder or Bladderly?
Water Reminder is rated higher. Water Reminder averages 4.8 out of 5 from 1.9K ratings, while Bladderly averages 4.5 from 206 ratings.
Do Water Reminder or Bladderly have ads?
Neither Water Reminder nor Bladderly shows ads.
Which is updated more often, Water Reminder or Bladderly?
Water Reminder ships an update every 6 days, and Bladderly every 5 weeks. Most recently, Water Reminder was updated on November 2, 2026 and Bladderly on November 3, 2026.

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