Additional measurement of heart rate variability data (FFT ‘spectrum’ analysis) - accurate when used with an appropriate heart rate sensor that transmits ‘rr’ or ‘interbeat-interval’ data e.g. Scosche ‘Rhythm+’, Polar H10 etc.

This app has been updated by Apple to display the Apple Watch app icon. New interactive sounds controlled by changes in your heart rate. Removed sign-up requirement.

A huge update! Thanks for your reviews, comments and suggestions. Most of all, thanks for your patience! New in BrightHearts 1.1: You can now view your heart rate, graphed in real time in the session. Also shown is your Heart Rate Variability (HRV), measured over the last 30 samples. We've added an intro 'how-to' screen, to help understand how the app works. BrightHearts users can also create accounts, so your heart rate session data will be stored in the cloud, automatically. We've also added in-app support, so if you need help or suggest a new feature, you can do that without even leaving the app. Let us know what you think, just hit the settings button, then leave us some feedback. Thanks!