Comparison

H2O vs AquaFaste

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

AquaFaste

Features
Read full description

How much water did you really drink today? AquaFaste answers that question — with a personal Hydration Score that rates your day from 0 to 100. Track every sip with one tap. AquaFaste calculates your daily goal based on your weight and activity level using EFSA guidelines, then helps you hit it every single day. ▸ PERSONAL HYDRATION SCORE Your Hydration Score rates your daily performance from 0 to 100 — based on consistency, timing, and goal completion. No other app does this. Track your score over time and watch it climb. ▸ ONE-TAP TRACKING • 12 drink types — water, coffee, tea, juice, milk, smoothie, and more • Personal daily goal — calculated from your weight and activity level • Live progress ring — beautiful animated ring fills as you drink • Caffeine monitoring — track your caffeine intake alongside hydration • HealthKit sync — your water data flows into Apple Health automatically ▸ INSIGHTS & HISTORY • Weekly & monthly charts — see hydration trends at a glance • Daily timeline — every drink logged with timestamp and amount • Smart statistics — daily average, best day, goal rate, and streaks • 30-day calendar — visualize consistency with a color-coded heat map ▸ STREAKS & ACHIEVEMENTS Build daily streaks and unlock 12 achievements across four categories: Streak, Volume, Variety, and Consistency. From "Hydration Starter" (3 days) to "Century Club" (100 days). ▸ SMART REMINDERS Context-aware notifications during waking hours. Quiet at night. Streak-at-risk alerts keep you on track. Goal celebration when you hit your target. ▸ SHARE YOUR STATS Generate beautiful hydration cards with your progress ring, stats, and streak — perfect for Instagram, TikTok, or friends who need a hydration nudge. ▸ PRIVACY FIRST All data stays on your device. No accounts. No cloud. No ads. Ever. ▸ SIRI & SHORTCUTS "Hey Siri, log water" — hands-free hydration tracking. ▸ FREE TO USE Core tracking is free, forever. Upgrade to Pro for unlimited history, advanced stats, smart reminders, all themes, CSV export, streak freeze, caffeine insights, and custom drinks. Terms of Use: https://theknack2020-sketch.github.io/aquafaste/terms Privacy Policy: https://theknack2020-sketch.github.io/aquafaste/privacy

Screenshots

H2O4 screens
AquaFaste4 screens

Verdict

The call

The clearest difference is iOS requirement: AquaFaste at 17.0 against H2O's 26.0. 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. H2O sells 4 in-app purchases, starting at $1.99 per month and AquaFaste sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 9 level
H2O versus AquaFaste: the parameters behind the verdict, then further details
ParameterH2OAquaFaste
PriceFreeFree
Rating4.5 (192 ratings) — better—
Positive reviews84.9% of reviews—
Number of ratings192 — better—
Update frequencyEvery 3 days—
AdsNoNo
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size48 MB8 MB
Age rating12+4+
DeveloperLunarbits LLCUFUK OZDEMIR

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

AquaFaste

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
3 purchases

AquaFaste

Subscriptions2
  • Monthly Premium$1.991 Month
  • Yearly Premium7 Days trial$9.991 Year
One-time1
  • Lifetime Premium$4.89

Questions

Is H2O free?
H2O is free to download, with in-app purchases available.
Is AquaFaste free?
AquaFaste is free to download, with in-app purchases available.
Do H2O or AquaFaste have ads?
Neither H2O nor AquaFaste shows ads.

Other comparisons