Comparison

HydroRing vs Mizu Water Tracker Hydration

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

Head to head
About

HydroRing

Read full description

Tap once to log a drink and watch your ring fill up. See how much water you've had today at a glance. A simple hydration tracker that's easy to stick with, even on busy days. KEY FEATURES - One-tap logging: set your favorite amounts as buttons, or enter a custom amount - Progress ring: turns gold when you go past your goal - See how much is left to reach today's goal - Choose what you're drinking (water, tea and more) - Confetti and haptics when you hit your goal - Daily streaks and 13 badges to earn - Calendar view of your past days - Weekly chart, average intake, goal days and best streak - Reminder notifications at the times you choose - Daily goal from 500 ml to 5000 ml - Switch between ml and oz - Available in English and Japanese GREAT FOR - Anyone who gets busy and forgets to drink water - Building a daily water habit - Seeing how coffee and tea fit into your day - People who gave up on trackers that ask for too much input - Staying on top of your water intake in hot or dry weather PRIVACY - No account needed - Your logs are stored only on your iPhone or iPad and are never sent to a server - No tracking - To show our other apps, the app reads public App Store information (your logs are never sent) PLEASE NOTE HydroRing is a wellness app for logging everyday drinks. It is not a medical device or a medical app. Please talk to a doctor or other qualified professional about your health.

About

Mizu Water Tracker Hydration

Features
Read full description

Reach your daily water goal — effortlessly. Mizu is the simplest, most beautiful way to monitor your hydration. See your progress at a glance, get timely reminders, and learn science-backed tips — all for you, forever. Why users love Mizu: -Gorgeous animated ring shows exactly where you stand -One tap to log water — as fast as drinking it DAILY GOAL AND PROGRESS Set your personal daily water goal and watch the animated circular progress ring fill up as you log each drink. Instant visual feedback keeps you motivated all day long. QUICK-ADD BUTTONS Four one-tap buttons — 150 ml, 250 ml, 350 ml, 500 ml — cover every common drink size. Log a glass of water in under a second. SMART REMINDERS Configure a custom reminder interval (every 30 min, every hour, etc.) within your chosen time window (e.g., 8 AM – 10 PM). Never forget to drink, never get notified while you sleep. 7-DAY HISTORY CHART A clean bar chart shows your intake for the past seven days so you can spot trends, celebrate streaks, and stay accountable. 20 HYDRATION TIPS Browse expert tips organized into five categories — Science, Lifestyle, Sports, Morning, and Evening — and learn how hydration affects energy, skin, performance, and more. FULLY CUSTOMIZABLE • Adjust your daily goal at any time • Set reminder frequency and active hours • Clean, minimal interface with no clutter PRIVACY FIRST All data stays on your device. No account required. No tracking. No cloud sync needed. Mizu is built for people who want a no-nonsense, beautiful hydration companion. Download today and start your streak. Mizu Pro is an optional auto-renewable subscription ($9.99/week, 3-day free trial). Payment is charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless cancelled at least 24 hours before the end of the current period. You can manage and cancel subscriptions in your account settings on the App Store. Terms of Use: https://watertracker-legal.vercel.app/terms Privacy Policy: https://watertracker-legal.vercel.app/privacy

Screenshots

HydroRing4 screens
Mizu Water Tracker Hydration4 screens

Verdict

The call

The clearest difference is update cadence: Mizu Water Tracker Hydration at fortnightly against HydroRing's every 6 weeks. 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. HydroRing sells 1 one-off in-app purchase and Mizu Water Tracker Hydration sells 2 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

HydroRing ships an update every 6 weeks, Mizu Water Tracker Hydration fortnightly. Both last shipped on October 25, 2026.

Scorecard1 real difference · 5 level
HydroRing versus Mizu Water Tracker Hydration: the parameters behind the verdict, then further details
ParameterHydroRingMizu Water Tracker Hydration
PriceFreeFree
Update frequencyEvery 6 weeksFortnightly — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size2 MB1 MB
Age rating4+4+
DevelopertorankiriteOleskii Novikov

In-app purchases

1 purchases

HydroRing

One-time1
  • HydroRing Premium$3.99
2 purchases

Mizu Water Tracker Hydration

Subscriptions2
  • Mizu Pro Weekly3 Days trial$9.997 Days
  • Mizu Pro Annual$49.991 Year

Questions

Is HydroRing free?
HydroRing is free to download, with in-app purchases available.
Is Mizu Water Tracker Hydration free?
Mizu Water Tracker Hydration is free to download, with in-app purchases available.
Do HydroRing or Mizu Water Tracker Hydration have ads?
Neither HydroRing nor Mizu Water Tracker Hydration shows ads.
Which is updated more often, HydroRing or Mizu Water Tracker Hydration?
HydroRing ships an update every 6 weeks, and Mizu Water Tracker Hydration fortnightly. Most recently, HydroRing was updated on October 25, 2026 and Mizu Water Tracker Hydration on October 25, 2026.

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