Use it for calculating heart rate
While we all know that smartwatches like Apple Watch can be used for detecting your heart rate, did you know that you can do the same using just your iPhone?
Install the Instant Heart Rate: HR Monitor app from the App Store on your iPhone. This app can be used to almost instantly calculate your heart rate by monitoring your pulse.
Instant Heart Rate: HR Monitor
The most accurate and easy-to-use heart rate app - Used in heart research in the US! - Get your heart rate in less…
All you need to do is place your index finger on the top of your iPhone’s camera or the flashlight. After a few seconds, the app will accurately calculate and show your heart rate.