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About this app

Heat Aid is a safety management app that visualizes the risk of heatstroke for workers at work sites and provides early warnings of danger.

It connects a wearable sensor (body temperature and heart rate) with a smartphone to monitor the "heat stress index" calculated from the body's condition in real time. When the risk increases, it issues an immediate warning and automatically contacts the manager as needed.

■ Recommended for these types of workplaces and individuals:

・Work in outdoor, high-temperature environments such as construction, civil engineering, manufacturing, logistics, security, and agriculture

・Managers and safety officers who manage the health of workers at work sites during the summer

・Workplaces where workers often work alone or in remote locations

■ Main Features

・Real-time monitoring of heat stress: Continuously checks the heat burden on the body based on body temperature and heart rate obtained from the wearable sensor.

・Gradual warning notifications

Notifies the user with screen displays and notifications according to the risk level. Encourages breaks before dangerous conditions are reached.

・Automatic notification to managers

If a dangerous level is reached, it automatically notifies the pre-set manager to support early response.

* Recording of Breaks and Status
Records the status during work and breaks to aid in overall safety management at the worksite.

* Easy Initial Setup
Simply register your company name, name, etc., and connect the sensor to begin using the app.

■ How to Use
1. Register worker information in the app.
2. Connect the wearable sensor to your smartphone.
3. When you start work, heat stress monitoring will begin.
4. If the risk increases, a warning will be displayed, and the administrator will be contacted as needed.

■ Notes on Use
* This app requires a compatible wearable sensor.
* Bluetooth is used to connect to the sensor.
* Please allow notifications to be used.

■ Precautions
This app is intended to assist in safety management at the worksite and is not a medical device. The displayed indicators and notifications do not diagnose or guarantee health conditions and are not a substitute for the judgment of a doctor or specialist. If you experience any unusual symptoms, stop working immediately regardless of the app's display and seek appropriate medical attention or medical advice.

Heat Aid supports the safety of everyone working in hot environments.
Updated on
Jul 8, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Personal info
This app may collect these data types
Personal info, Health and fitness, and App info and performance
Data is encrypted in transit
Committed to follow the Play Families Policy

What’s new

・権限の許可フローを改善し、各権限の必要性を説明する画面を追加しました。
・センサー接続の安定性を向上しました。
・不具合を修正しました。
Content rating
Everyone
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App support

About the developer
CREWSWORKS INC.
heat-aid@crews-works.com
2-28, SHIMOMIYABICHO IIDABASHI HIGH TOWN 707 SHINJUKU-KU, 東京都 162-0822 Japan
+81 90-2069-2011