Comparison

UNK vs Water Requirement

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

Head to head
About

UNK

Track your daily bowel movements to monitor your physical condition and identify potential health issues like constipation. This app helps you become more aware of your body's signals and take control of your digestive health.

Highlights
  • Record daily bowel movements
  • Monitor physical conditions
  • Identify constipation
  • Improve digestive health
  • Track bathroom frequency
Features
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Health caring by recording your daily poo. Do you remember the last day you go for poo? Because of your constipation, aren’t you forgetting the last time you go to bathroom? Constipation, a possibility of being fat and rough & dry skin, is deadly foe of mankind. ・poo several times in weekends and in the begging of the week. ・diarrhea ・stomach ache These are the reason of binging too much…… On your bowel movement, it appears your a day’s physical conditions. By recording your daily poo, you are able to aware of your little physical changes and easily take a control of your physical conditions. And also it will tell you that you are out of whack or not. From now on, with this easily recordable app UNK, Let’s improve and make more better your stomach and physical conditions.

About

Water Requirement

Features
Read full description

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.

Screenshots

UNK4 screens
Water Requirement4 screens

Verdict

The call

The clearest difference is ads: UNK at none against Water Requirement's shown. UNK also leads on iOS requirement (12.0 vs 16.2). Water Requirement's advantage is update cadence (every 4 months vs every 9 months). On price, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

UNK ships an update every 9 months, Water Requirement every 4 months. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.

Scorecard3 real differences · 7 level
UNK versus Water Requirement: the parameters behind the verdict, then further details
ParameterUNKWater Requirement
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings1 — better—
Update frequencyEvery 9 monthsEvery 4 months — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better16.2
Further details — not scored
Size13 MB17 MB
Age rating4+12+
DeveloperQOXYuta Endo

In-app purchases

None

UNK

No in-app purchases

None

Water Requirement

No in-app purchases

Questions

Is UNK free?
UNK is free to download, with no in-app purchases.
Is Water Requirement free?
Water Requirement is free to download, with no in-app purchases.
Do UNK or Water Requirement have ads?
Water Requirement shows ads; UNK does not.
Which is updated more often, UNK or Water Requirement?
UNK ships an update every 9 months, and Water Requirement every 4 months. Most recently, UNK was updated on October 7, 2026 and Water Requirement on October 18, 2026.

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