Kubios HRV app - now released for Android

Best HRV Monitor and Cardiac Coherence app (cheap vs expensive options)

DR. JOE DISPENZA - HEART BRAIN COHERENCE MEDITATION Project Coherence #JoeDispenza

Analyzing Polar session HR data in Kubios 3.4 Free Edition

HEART & BRAIN Coherence & Harmony | 639Hz Heart Chakra + 6Hz Theta + 0.1Hz Delta Waves Binaural Beat

Arrhythmia - Heal Your Heart Rhythm Disorders | Calm Down Heart Anxiety | Regulate Your Heart Music

Inner Balance App - Customize Your Experience & An Overview of Settings

4:6 Breathing Technique To Lower Your Heart Rate & Calm Down