So you want to track your meditation on your phone and take it to the next level? The Dhyana Meditation Ring has you covered. It combines with your smartphone to let you try meditations to help improve your focus, deepen your sleep, and reduce your stress.
This meditation tracker comes with HRV sensors, a 3-axis acceleromter, and Bluetooth. It lasts up to 7 days on battery. You can find out more about it here.