A free app for Android, by Spencer Studios.

The 4-7-8 Breathing technique is a simple, practical, and easy-to-use breathing pattern that will help you achieve a deeper state of relaxation and mental clarity.

This technique consists of four simple steps that will help you relax and improve your mental state:

. Breathing in and out through the nose for four cycles

. Holding your breath in the lungs for seven cycles

. Breathing in and out through the mouth for eight cycles

. Repeat the four steps for a total of 24 cycles

This pattern can be used to help you relax and reduce stress, anxiety, and other mental disorders. It can also help you improve your concentration and memory.