Comparison

活動量計HR 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

活動量計HR

This app supports daily exercise with heart rate monitoring. It helps maintain motivation by showing step counts and goals at a glance. Data is recorded on the device, allowing for easy transfer and synchronization with your smartphone at home.

Highlights
  • Heart rate monitoring
  • Step tracking
  • Goal setting
  • Data synchronization
  • HealthKit integration
Read full description

毎日の運動をサポートする心拍測定付き活動量計用アプリです。歩数記録や目標が一目で分かるのでモチベーションの継続に役立ちます。本体にデータ記録されるので身軽に外出、自宅でスマホに転送・同期できます。 -iPhoneをお持ちであれば、標準アプリ「ヘルスケア」に同期できます。同期することで見慣れた標準アプリで日々の運動記録を確認することができます。同期するデータは当社をはじめ他の代理店を含む、いかなる第三者にも共有または販売されません。

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

活動量計HR3 screens
Water Requirement4 screens

Verdict

The call

The clearest difference is ads: 活動量計HR at none against Water Requirement's shown. 活動量計HR also leads on update cadence (monthly vs every 4 months) and iOS requirement (8.0 vs 16.2). 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

活動量計HR ships an update monthly, Water Requirement every 4 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard3 real differences · 5 level
活動量計HR versus Water Requirement: the parameters behind the verdict, then further details
Parameter活動量計HRWater Requirement
PriceFreeFree
Positive reviews20.0% of reviews—
Update frequencyMonthly — betterEvery 4 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS8.0 — better16.2
Further details — not scored
Size34 MB17 MB
Age rating4+12+
DeveloperKashimura Co., Ltd.Yuta Endo

In-app purchases

None

活動量計HR

No in-app purchases

None

Water Requirement

No in-app purchases

Questions

Is 活動量計HR free?
活動量計HR 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 活動量計HR or Water Requirement have ads?
Water Requirement shows ads; 活動量計HR does not.
Which is updated more often, 活動量計HR or Water Requirement?
活動量計HR ships an update monthly, and Water Requirement every 4 months. Most recently, 活動量計HR was updated on November 3, 2026 and Water Requirement on November 4, 2026.

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