In the past few years, we have tested plenty of amazing meditation apps for iPhone. Mindnap takes it to the next level by serving as your meditation coach. It has a built-in ECG sensor and guides you with vibration to control your breathing and reach a deeper meditation state.
When Mindnap’s vibrations become stronger, you inhale and exhale to help get your mind to the right state. Mindnap’s vibration frequency can be adjusted. The device combines with your phone to analyze your HRV and breathing. Expected to ship in May.[where to get it]