Comparison

H2O vs Gulp

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

Gulp

Features
Read full description

Gulp is the beautiful, effortless way to drink more water and build a hydration habit that actually sticks. Set your goal, tap to log, and watch your day fill up. Gulp turns staying hydrated into something you'll look forward to — calm, premium and genuinely fun. WHY GULP • Smart daily goal — Gulp works out how much water you really need from your weight, age, the weather and your activity, and adapts on hot or active days. • Log in one tap — Quick-add your favorite drinks from the Home screen, a Lock Screen widget, Control Center or your Apple Watch. • 80+ drinks — Water, coffee, tea, juice, soda, smoothies and more. Gulp even tracks caffeine, sugar and alcohol for you. • Living water ring — A gorgeous animated ring that ripples and reacts as you tilt your phone. STAY MOTIVATED • Streaks & badges — Keep your streak alive and unlock achievements. • Your month, Wrapped — A shareable monthly recap of your hydration journey. • A friendly companion — Meet Driplet, your little water buddy who cheers you on. INSIGHTS THAT MATTER • Beautiful charts, daily and weekly reports, and a full calendar history. • See your average, your best day and your goal hit-rate at a glance. WORKS EVERYWHERE • Lock Screen & Home Screen widgets • Apple Watch app & complications • Control Center and the Action Button • Apple Health sync • iCloud sync across your devices • English, Turkish, German, Spanish and French Your body is mostly water — give it what it needs, beautifully. Download Gulp and start your streak today.

Screenshots

H2O4 screens
Gulp4 screens

Verdict

The call

The clearest difference is in-app purchases: Gulp at none against H2O's 6. Gulp also leads on iOS requirement (17.0 vs 26.0). On price, update cadence, ads 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. Gulp asks for nothing beyond the download.

UpkeepUpdate frequency

H2O ships an update every 3 days, Gulp every 5 days. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 8 level
H2O versus Gulp: the parameters behind the verdict, then further details
ParameterH2OGulp
PriceFreeFree
Rating4.5 (175 ratings) — better—
Positive reviews84.9% of reviews—
Number of ratings175 — better—
Update frequencyEvery 3 days — betterEvery 5 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, Apple WatchiPhone, iPad, Apple Watch — better
Requires iOS26.017.0 — better
Further details — not scored
Size48 MB78 MB
Age rating12+4+
DeveloperLunarbits LLCSerkan Kaplan

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

Gulp

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
None

Gulp

No in-app purchases

Questions

Is H2O free?
H2O is free to download, with in-app purchases available.
Is Gulp free?
Gulp is free to download, with no in-app purchases.
Do H2O or Gulp have ads?
Neither H2O nor Gulp shows ads.
Which is updated more often, H2O or Gulp?
H2O ships an update every 3 days, and Gulp every 5 days. Most recently, H2O was updated on November 1, 2026 and Gulp on October 28, 2026.

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