Comparison

H2O vs Hydration Tracker & Reminder

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

Head to head
About

H2O

This application helps you monitor your daily water consumption to ensure you stay adequately hydrated. It offers a visually appealing interface with features for quickly logging intake and reviewing your progress.

Highlights
  • Log water intake quickly
  • Preset water amounts
  • Weekly intake graph
  • Full history of entries
  • HealthKit integration
  • Intuitive interface
Features
Read full description

Most water apps give you the same goal every day. H2O raises yours on hot days and after workouts, so you drink what your body actually needs. Log a glass in one tap from your iPhone, Apple Watch or Home Screen, and watch your streak grow on the calendar. H2O makes staying hydrated the easiest habit you'll build. H2O has helped people stay hydrated since 2016, and version 2.0 is rebuilt from the ground up. FEATURES ◉ Daily goals that adapt to the local weather and your workouts in Apple Health. ◉ Quickly add entries with preset water amounts, or enter a custom amount. ◉ An Apple Watch app with complications for your watch face. ◉ Home Screen widgets that log water with one tap. ◉ Gentle reminders to drink throughout the day. ◉ A calendar that shows every day you hit your goal. ◉ Charts of your weekly and monthly water intake. ◉ A full history of water entries. ◉ Apple Health integration and iCloud sync across your devices. ◉ Export your water history as a PDF. ◉ Track in ounces or milliliters. ◉ Support for VoiceOver, Voice Control, Larger Text and Reduced Motion. ◉ A beautiful and intuitive interface! H2O PRO H2O requires H2O Pro, available as a monthly or yearly auto-renewing subscription, or as a one-time lifetime purchase. The yearly plan includes a 7-day free trial for eligible new subscribers. If you used H2O before version 2.0, the app stays free for you, and H2O Pro adds adaptive goals and PDF export. Payment is charged to your Apple Account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ H2O Terms: https://lunarbits.io/terms.html Privacy Policy: https://lunarbits.io/privacy.html

About

Hydration Tracker & Reminder

Easily monitor your daily water intake with personalized goals and gentle reminders. Track your progress over time with detailed statistics. Your data is kept private and stored only on your device.

Highlights
  • Daily hydration tracking
  • Customizable goals
  • Gentle reminders
  • Progress tracking
  • Advanced statistics
  • Streak tracking
Features
Read full description

Hydrate makes it easy to stay on top of your daily water intake. Set your goal, get gentle reminders, and track your progress over time. Your data stays completely on your device. No accounts, no tracking, no collection. Free:  - Daily hydration tracking Pro - Reminders,  - Streaks,  - Advanced stats Terms of Service and Privacy Policy: https://natetedesco.notion.site/Hydration-Tracker-27cce04c9990807897f8e0b19d6a1b63?source=copy_link

Screenshots

H2O4 screens
Hydration Tracker & Reminder3 screens

Verdict

The call

The clearest difference is rating: Hydration Tracker & Reminder at 5.0 against H2O's 4.5. Hydration Tracker & Reminder also leads on iOS requirement (17.6 vs 26.0). H2O's advantage is update cadence (every 3 days vs every 6 months) and monetization model (free vs freemium). 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. H2O sells 4 in-app purchases, starting at $1.99 per month and Hydration Tracker & Reminder sells 2 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Hydration Tracker & Reminder holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: H2O has 166 ratings behind it against 10, so its average is the more settled of the two.

UpkeepUpdate frequency

H2O ships an update every 3 days, Hydration Tracker & Reminder every 6 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
H2O versus Hydration Tracker & Reminder: the parameters behind the verdict, then further details
ParameterH2OHydration Tracker & Reminder
PriceFreeFree
Rating4.5 (166 ratings)5.0 (10 ratings) — better
Positive reviews84.9% of reviews—
Number of ratings166 — better10
Update frequencyEvery 3 days — betterEvery 6 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS26.017.6 — better
Further details — not scored
Size48 MB1 MB
Age rating12+4+
DeveloperLunarbits LLCNathaniel Tedesco

Customer experience

H2O

All ratings129 ratings
Positive86.8%
Neutral3.9%
Negative9.3%
Written reviews53 reviews
Positive84.9%
Neutral1.9%
Negative13.2%

Hydration Tracker & Reminder

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

H2O

Reported bugs

5 issues
  • App crashes when accessing settings
  • App shuts off when accessing settings
  • Graph feature not working
  • App closes when goal is reached
  • Glitches when reaching goal

Requested features

20 requests
  • Add reminder notifications
  • Allow editing of previous day's entries
  • Add metric units (ml/L)
  • Add widget support
  • Add export to HealthKit option
Show 15 more
  • Add ability to flip to a second profile
  • Add Apple Watch integration
  • Add dark mode
  • Add support for other beverages (coffee, tea)
  • Add Shortcuts support
  • Fix app closing when goal is reached
  • Fix glitches when reaching goal
  • Clarify how to delete entries
  • Add total fluid intake of previous days by each day in history
  • Allow changing the date/time of an entry
  • Allow the app to read HealthKit data
  • Automatically update daily goal with age, weight, and gender
  • Refine daily goal with location and activity data
  • Add a way to donate to the developer
  • Screen adjustment sizes for newer iPhones

Hydration Tracker & Reminder

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

H2O

Subscriptions3
  • H2O Pro Monthly2 variants$1.991 Month
  • H2O Pro Yearly7 Days trial$9.991 Year
  • H2O Pro Yearly$9.991 Year
One-time1
  • H2O Pro Lifetime2 variants$19.99
2 purchases

Hydration Tracker & Reminder

Subscriptions2
  • Weekly$0.997 Days
  • Yearly3 Days trial$9.991 Year

Questions

Is H2O free?
H2O is free to download, with in-app purchases available.
Is Hydration Tracker & Reminder free?
Hydration Tracker & Reminder is free to download, with in-app purchases available.
Which has better reviews, H2O or Hydration Tracker & Reminder?
Hydration Tracker & Reminder is rated higher. H2O averages 4.5 out of 5 from 166 ratings, while Hydration Tracker & Reminder averages 5.0 from 10 ratings.
Do H2O or Hydration Tracker & Reminder have ads?
Neither H2O nor Hydration Tracker & Reminder shows ads.
Which is updated more often, H2O or Hydration Tracker & Reminder?
H2O ships an update every 3 days, and Hydration Tracker & Reminder every 6 months. Most recently, H2O was updated on October 29, 2026 and Hydration Tracker & Reminder on October 25, 2026.

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