Comparison

熱中症予報計 vs Thermometer S

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

Head to head
About

熱中症予報計

Features
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気温と湿度の予測データから「暑さ指数」を算出。 熱中症の危険度を5段階で表示。同時に5つの市区町村を登録できます。 今後24時間の天気、気温、湿度、風向、風速の状況もわかります。 暑い季節を乗り切るために「熱中症予報計」を活用していただき、ご家庭や職場、学校、病院、お出かけ先など、さまざまなシーンでお役立てください。 現在の「暑さ指数」をお知りになりたい場合は、姉妹アプリ「熱中症警戒計」をご利用ください。

========================== アプリ起動後に「地点設定」ボタンをタップして表示させたい市区町村を登録してください。 「地点設定」画面では左上の+ボタンで登録が完了し、今後24時間の熱中症危険度や暑さ指数(WBGT)などが表示されます。 複数の地点を設定した場合は、左右へスワイプすると別の地点に切り替えられます。 表示される折れ線グラフは暑さ指数(WBGT)の値です。気温ではありませんので、ご注意ください。 「対策メモ」ボタンでは、独立行政法人・日本スポーツ振興センターが作成した「熱中症を予防しよう -知って防ごう熱中症-」の一部を収録していますので、熱中症予防対策の参考にしてください。画面をピンチ操作すると拡大表示できます。 「暑さ指数」ボタンでは、暑さ指数の求め方などを掲載しています。 「指数算出」ボタンでは、気温、湿度、時刻を設定して暑さ指数が求められます。室内などでの適切な気温、湿度管理の参考になります。 ========================== 日本生気象学会「日常生活における熱中症予防指針」と日本体育協会「熱中症予防のための運動指針」に基づき「WBGT値と気温、相対湿度との関係」を参考に、独自の計算式で「暑さ指数(WBGT)」を算出して、熱中症危険度をランク分けしています。 熱中症危険度は「危険・厳重警戒・警戒・注意・ほぼ安全」の5段階で表示します。 
※暑さ指数(WBGT)とは、暑熱環境による人が受ける熱ストレスの評価を行う指標としてISO7243・JIS Z8504で規定されています。 ※熱中症の危険度は環境条件によって大きく変化します。あくまでも目安としてお使いください。

About

Thermometer S

Monitor your environment's temperature and humidity with this app. It provides clear, easy-to-read data for health management, preventing heatstroke and colds, and mold prevention. Customize the display to show only the information you need.

Highlights
  • Large, clear temperature display
  • Humidity, precipitation, wind speed, and air pressure
  • Sensor-based or internet weather data
  • Customizable information display
  • Celsius/Fahrenheit unit switching
  • Simple, user-friendly design
Features
Read full description

A thermometer is an essential tool for managing the health of children, the elderly, and babies. With this app, you can quickly grasp the temperature and humidity of your environment and take appropriate measures. It is useful in various situations, such as health management, heatstroke prevention, and mold prevention. [[ For Health Management ]] Easy-to-read temperature display for those sensitive to changes in physical condition Make checking the temperature and humidity a habit to protect your health [[ For Daily Use ]] Easy humidity management with the app for cold and influenza prevention Manage your health with temperature and humidity! The app supports a healthy lifestyle. [[ For Different Seasons ]] Prevent heatstroke in summer and colds in winter! Useful for mold prevention during the rainy season! --- App Features --- [[ Large and Clear Temperature Display ]] The temperature is displayed in a large font for easy visibility at a glance. [[ Multifunction: Precipitation, Wind Speed, Humidity, and Air Pressure ]] In addition to the temperature display, the following information is also displayed: Precipitation Wind speed Humidity Air pressure [[ Optimal Information Display ]] If your device has a sensor, the app will display information obtained from the sensor. If there is no sensor, the app will obtain information from a nearby weather station or the internet. For devices without a sensor, location information is used. In Japan, information is obtained from AMeDAS. For devices without a sensor, the outdoor temperature will be displayed instead of the indoor temperature. [[ Simple Design ]] The app features a user-friendly design with a light gray base color. [[ Customizable Display ]] Although the app displays a variety of information such as temperature and humidity, you can customize it to display only the information you need, such as "temperature and humidity only." --- Optional Features --- Language switching function Unit switching function Switch between Celsius (C°) and Fahrenheit (F°) Display/non-display switching of information You can hide information other than temperature. Switching of information sources The default setting is automatic. You can prioritize obtaining information from weather stations or the internet. --- Notes and Disclaimer --- This app uses location information and its history to provide you with appropriate functions and information (including advertisements). Some of the functions of this app require data communication. You will be responsible for the communication charges. We are not responsible for any troubles or accidents that may occur while using this app.

Screenshots

熱中症予報計3 screens
Thermometer S4 screens

Verdict

The call

The clearest difference is update cadence: Thermometer S at every 4 weeks against 熱中症予報計's every 5 months. On price, ads, 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

熱中症予報計 ships an update every 5 months, Thermometer S every 4 weeks. The most recent releases landed on October 3, 2026 and September 25, 2026 respectively.

Scorecard1 real difference · 9 level
熱中症予報計 versus Thermometer S: the parameters behind the verdict, then further details
Parameter熱中症予報計Thermometer S
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews35.0% of reviews—
Number of ratings—1 — better
Update frequencyEvery 5 monthsEvery 4 weeks — better
AdsYesYes
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.0 — better
Further details — not scored
Size7 MB31 MB
Age rating4+4+
DeveloperTakahiro IzakiAkira Yamamoto

Customer experience

熱中症予報計

Written reviews20 reviews
Positive35.0%
Neutral15.0%
Negative50.0%

Thermometer S

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

熱中症予報計

No in-app purchases

None

Thermometer S

No in-app purchases

Questions

Is 熱中症予報計 free?
熱中症予報計 is free to download, with no in-app purchases.
Is Thermometer S free?
Thermometer S is free to download, with no in-app purchases.
Do 熱中症予報計 or Thermometer S have ads?
Both 熱中症予報計 and Thermometer S show ads.
Which is updated more often, 熱中症予報計 or Thermometer S?
熱中症予報計 ships an update every 5 months, and Thermometer S every 4 weeks. Most recently, 熱中症予報計 was updated on October 3, 2026 and Thermometer S on September 25, 2026.

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