TENS therapy devices are nothing new. Plenty of athletes use them for pain relief and faster recovery. eCookie is an app smart TENS device for menstrual pain relief. It provides you with relief at the touch of a button without any chemicals. It sends electrical impulses into the skin around the pain area and blocks transmitters that send pain signals to the brain.
To get started, download the eCookie app, place the electrodes around the pain area, and choose the proper settings in the eCookie app. You get 15 different settings and 4 pre-set modes to choose from. The device can provide you with up to 4 hours of relief. It works with iOS/Android devices.[where to get it]