HeartMath was founded in 1991 by Doc Childre, who is also the author of a dozen books: Transforming Anxiety, Transforming Anger, etc.
HeartMath devices utilize a technology called heart rate variability. This consists of monitoring a person’s pulse while they meditate. If a person’s heart rate varies a lot this is an indicator of their experiencing stress.
By sending this biofeedback to an iPhone, iPad, or iTouch- the user is enabled to pay more attention to their heart rate and try to make it more consistent throughout their day.
Claimed benefits of this include, reducing the user’s anxiety and fatigue and bettering their thinking and decision making processes.
For more information visit: http://www.heartmath.com/