An interesting app from Marco Altini.
HRV measurement by using the camera on your iPhone (not Android). Some models (iPhone 5 or 6) can take HRV-accurate readings from your finger suing the phone’s camera effectively as a heart rate monitor.
Here are some more links if you want to find out more. Click on the icon and it will take you to the store on iTunes.
https://web.archive.org/web/20230607111414/https://www.hrv4training.com/blog/orthostatic-hrv-measurements-training-and-recovery
https://www.hrv4training.com/blog/heart-rate-variability-using-the-phones-camera
Last Updated on 14 January 2026 by the5krunner
tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors.
Is this camera connected to Apple?