Hydrate Easy vs Thirsty Day
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hydrate Easy
Easily track your daily water intake with simple logging and visual progress. Set personalized goals, receive timely reminders, and sync data with Apple Health. Customize the app's appearance to your preference.
- One-tap logging
- Daily goal tracking
- Customizable reminders
- Apple Health integration
- Home and Lock Screen widgets
- Streak tracking
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Hydrate makes drinking enough water one tap. It tells you what's left today in plain words, logs a glass, can or bottle without typing, and keeps your streak going. No account, no subscription, nothing to set up beyond your goal. Today • What's left, up top: "24 oz to go", then "Goal reached". • A goal ring that fills as you drink. • One tap for a glass, can, bottle or large bottle, in ounces or milliliters. • Any other amount at any time, for the drink you forgot to log. • Change or delete any drink, on any day. History • Your daily average, goal days, streak and personal best for the last week or month. • A bar for every day, and every day's drinks to look back on or put right. Apple Watch • Log a drink from your wrist and see what's left today. • Complications for your watch face. • Drinks logged on your Watch reach your iPhone, even if it was out of reach for a while. Widgets • Home Screen and Lock Screen widgets show what's left at a glance. Reminders • Reminders every one to four hours, between the hours you choose. • Each one says what's left, and they stop for the day once you reach your goal. • Log a glass straight from the reminder. Apple Health • Connect Apple Health and every drink you log is saved there as Water. • Delete a drink in Hydrate and it's deleted from Apple Health too. • Hydrate only saves Water. It doesn't read anything from Apple Health. Make it yours • Eight accents, each with its own app icon. • Light, or one of two darks: soft Graphite or true Black. Private by design • Your drinks stay on your device. No accounts, analytics, ads or tracking. Hydrate helps you build a daily habit. It isn't medical advice; ask your doctor how much water is right for you.
Thirsty Day
This app helps you stay hydrated with gentle reminders and a charming animal companion. Log your water intake easily, set personal goals, and earn new pets as you maintain your streak. It offers household profiles and basic health app syncing for free.
- Daily water total tracking
- Customizable daily goals
- Gentle sip reminders
- Home Screen widgets
- Animal companions and streaks
- Household profiles
- Health app syncing
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Drinking enough water should feel like a small kindness, not a chore. Log a sip, see your day fill up, and let Otter keep you company along the way. Everyday tracking is free, with no ads and no subscription. YOUR NEXT SIP, MADE SIMPLE • Today's water total, always in view • Add a drink in a tap and choose your own daily goal • Optional, gentle sip reminders • Ounces or milliliters • Home Screen widgets A SMALL REWARD FOR SHOWING UP Start with Otter and four free wildlife companions: Axolotl, Capybara, Red Panda, and African Penguin. Earn Cat, Dog, Fox, and Lion by keeping your logging streak. Companions you have earned or bought stay yours. FOR THE WHOLE HOUSEHOLD Add household profiles for free. Kids profiles use their own manual goals, never adult activity or heat adjustments. FREE FOR EVERYDAY LIFE Water logging, manual goals, streaks, household profiles, widgets, and optional reminders stay free. Basic Health app water syncing and available health metrics are free too, with your permission. THIRSTY PRO: OPTIONAL, ONE-TIME Pro unlocks all classic animals and adaptive goal guidance that uses local weather and your workout and activity information to suggest a daily goal. Guidance refreshes while you use the app. Weather and Health permissions are optional. Not a subscription. Pro does not include the separate Mythic Creatures collection or every separately sold companion. MAKE IT YOURS Individual companions and the Mythic Creatures collection are optional one-time purchases, and purchases can be restored. Existing Pro owners keep Pro access, and verified pre-3.0 customers keep their existing adaptive guidance. QUIET AND PRIVATE BY DESIGN No advertising. Your Health data is used for your hydration experience and never sold. Weather uses approximate location, only with your permission. One sip at a time. Made thoughtfully by House Rhymaun. Less noise. More life. Hydration guidance is an estimate, not medical advice. Follow your clinician's advice, especially if you have fluid restrictions.
Screenshots
Verdict
The clearest difference is in-app purchases: Hydrate Easy at none against Thirsty Day's 10. Thirsty Day's advantage is update cadence (every 2 days vs every 4 months). On price, rating, ratings volume and ads 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. Thirsty Day sells 10 one-off in-app purchases. Hydrate Easy asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Hydrate Easy against 5.0 for Thirsty Day. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
Hydrate Easy ships an update every 4 months, Thirsty Day every 2 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.
| Parameter | Hydrate Easy | Thirsty Day |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 4 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, Apple Watch — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthew Strickland | Marc Rhymaun |
Customer experience
Hydrate Easy
Thirsty Day
In-app purchases
Hydrate Easy
No in-app purchases
Thirsty Day
- Cloud Wisp$0.99
- Dog$0.99
- Fox$0.99
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- Tiger$0.99
- Elephant$0.99
- Golden Mossback$0.99
- Whale$0.99
- Orbit Sprite$0.99
- Emberwing$0.99
- Moonhorn$0.99









