Lovelife krush Kegel exerciser helps strengthen the pelvic floor which weakens over time due to childbirth and age. Equipped with built-in sensor technology, krush measures the pressure, control, endurance and grip of the PC muscle. Use with the tasl app to access pelvic floor training courses, voice-guided training, real-time visual feedback of PC muscle activity, and goal setting and rewards. App is compatible with both iPhone and Android.