Comparison

Water Requirement vs HydroDay

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

Head to head
About

Water Requirement

Features
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This is an app that lets you easily and simply record your hydration. You can obtain the temperature and humidity of your current location and use them as a reference for the amount of hydration you need for that day. Why not start recording your hydration volume today to maintain your health? ・Simple and easy-to-read screen ・No complicated operations ・Records hydration intake up to one month in advance ・Automatically displays weather information for your current location.  On hot or dry days, the amount of water lost through sweating increases.  Try to drink more water.

About

HydroDay

Features
Read full description

HydroDay : A Minimal, Private Hydration Tracker This is a simple yet precise hydration tracking app designed to help you understand your daily drinking habits No accounts, no cloud, no tracking — all data stays securely on your device Stay hydrated, build healthy habits, and see your progress across days, weeks, and months. - Beautiful & Effortless Tracking - Quick input for instant logging - Intuitive icons for different cup sizes Clean daily dashboard that updates automatically Weekly & Monthly Insights - Visual summaries that reveal your hydration patterns - Goal vs. actual tracking for each day - Tap into any date to view detailed logs Edit & Delete Anytime - Fix incorrect entries in one tap - Easily adjust past records Privacy You Can Trust - All data is stored only on your device - Works fully offline - Your hydration journey is yours alone

Screenshots

Water Requirement4 screens
HydroDay4 screens

Verdict

The call

Water Requirement and HydroDay are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
Water Requirement versus HydroDay: the parameters behind the verdict, then further details
ParameterWater RequirementHydroDay
PriceFreeFree
Update frequencyEvery 4 months—
AdsYesYes
In-app purchasesNoNo
DevicesiPhone, iPad — betteriPhone
Requires iOS16.2 — better17.0
Further details — not scored
Size17 MB37 MB
Age rating12+4+
DeveloperYuta EndoGeonung Cheong

In-app purchases

None

Water Requirement

No in-app purchases

None

HydroDay

No in-app purchases

Questions

Is Water Requirement free?
Water Requirement is free to download, with no in-app purchases.
Is HydroDay free?
HydroDay is free to download, with no in-app purchases.
Do Water Requirement or HydroDay have ads?
Both Water Requirement and HydroDay show ads.

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