UNK vs Water Requirement
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Record daily bowel movements
- Monitor physical conditions
- Identify constipation
- Improve digestive health
- Track bathroom frequency
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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.
Water Requirement
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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.
Screenshots
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | UNK | Water Requirement |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 months | Every 4 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.2 |
| Further details — not scored | ||
| Size | 13 MB | 17 MB |
| Age rating | 4+ | 12+ |
| Developer | QOX | Yuta Endo |
In-app purchases
UNK
No in-app purchases
Water Requirement
No in-app purchases








