HydroRing vs MIZU 水分記録・水を飲むリマインダー
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HydroRing
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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.
MIZU 水分記録・水を飲むリマインダー
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■ MIZU は、水を飲む習慣をつくるための、シンプルな水分記録アプリです 飲んだらタップするだけ。 今日の水分量がリングで満ちていき、目標までの残りがひと目でわかります。 【できること】 ・ワンタップで記録(200ml / 350ml / 500ml) ・押し間違えても、すぐ取り消せます ・今日の合計と目標達成率をリングで表示 ・決めた時間帯に、決めた間隔でリマインダー通知 ・7日 / 14日 / 30日のグラフで振り返り ・1日平均・達成した日数・連続達成日数がわかります ・目標量は 1,000〜4,000ml のあいだで自由に設定 【こんな方に】 ・水を飲むのをつい忘れてしまう方 ・毎日の水分量を記録しておきたい方 ・むくみや体調管理が気になる方 ・トレーニングやダイエット中の方 ・シンプルで見やすい水分記録アプリをお探しの方 【安心ポイント】 ・記録はすべて端末の中に保存されます ・会員登録・ログインは不要です ・ユーザーのトラッキングは行いません 【広告なし版について】 アプリ内の「広告なしにする」から一度お買い上げいただくと、 広告が消え、アクセントカラーの変更と記録の書き出し(CSV)が使えるようになります。 今日から、水を飲む習慣を。 お問い合わせ: kk.apps.support@gmail.com
Screenshots
Verdict
The clearest difference is ads: HydroRing at none against MIZU 水分記録・水を飲むリマインダー's shown. MIZU 水分記録・水を飲むリマインダー's advantage is update cadence (every 9 days vs every 6 weeks). On price, in-app purchases, device support and iOS requirement 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
Both are free to download. HydroRing sells 1 one-off in-app purchase and MIZU 水分記録・水を飲むリマインダー sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
HydroRing ships an update every 6 weeks, MIZU 水分記録・水を飲むリマインダー every 9 days. The most recent releases landed on October 17, 2026 and October 9, 2026 respectively.
| Parameter | HydroRing | MIZU 水分記録・水を飲むリマインダー |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Every 9 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 2 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | torankirite | Kenichi Kato |
In-app purchases
HydroRing
- HydroRing Premium$3.99
MIZU 水分記録・水を飲むリマインダー
- 広告なし+全機能$1.99
Questions
Is HydroRing free?
Is MIZU 水分記録・水を飲むリマインダー free?
Do HydroRing or MIZU 水分記録・水を飲むリマインダー have ads?
Which is updated more often, HydroRing or MIZU 水分記録・水を飲むリマインダー?
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