Useful app to monitor your great rate
Cardio can monitor your great rate and breath rate remotely without a wearable. It needs Cardio hardware to function.
Free
About
This app pairs with a unique sensor to monitor heart rate, respiratory rate, and stress levels without any wearable devices. It provides real-time alerts for significant heart rate changes and offers insights into overall wellness through continuous tracking.
✓Touchless heart rate monitoring
✓Touchless respiratory rate monitoring
✓Touchless stress level tracking (HRV)
✓Real-time heart rate alerts
✓Radar sensor technology
✓Privacy-preserving, no cameras
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What's New in Card/io
2.1.2
June 13, 2026
* Migrated the API to use new endpoint which is faster * UI Changes
User reviews
FAQ
How does Card/io monitor heart rate without a wearable?
Card/io uses a wall-mounted radar sensor, originally developed by NASA, to detect tiny vibrations in your body caused by your heartbeat. This allows for touchless monitoring without any devices worn on the body.
What health metrics does Card/io track besides heart rate?
In addition to heart rate, Card/io also monitors your respiratory rate (breaths per minute) and your stress levels by tracking Heart Rate Variability (HRV). This provides a more comprehensive view of your physiological state.
Can Card/io alert me to critical heart rate changes?
Yes, you can set up text alerts through the app to notify you if your heart rate dips or spikes outside of pre-defined levels. These alerts can be sent to your phone within a minute of the change.
Is Card/io suitable for elderly individuals?
Card/io is an ideal non-wearable solution for elderly relatives who would benefit from continuous heart rate monitoring. It offers a simple way to keep track of their health remotely.
Does Card/io use cameras to monitor users?
No, Card/io prioritizes privacy by using radar technology and does not employ cameras for monitoring. The sensor scans the room with radar waves to detect physiological signals.
What is the coverage area of the Card/io sensor?
The wall-mounted sensor can cover an average-sized room, approximately 10 feet by 10 feet. It is designed to track the heart rate of most people within this range flawlessly.
How often is Card/io updated?
The latest version of Card/io is 1.1.272, and it was last updated on May 20, 2026. This indicates a commitment to ongoing development and improvements for the application.
What devices is Card/io compatible with?
Card/io is available for iOS devices, specifically iPhones and iPods. It allows you to connect from anywhere with the iOS app to view your monitored data.
