Get your kegel game going with Gvibe Gballs 3 App, the ultra-smart vaginal exercise device! With Bluetooth version 4.0 and an app for both iOS and Android, you now have total control to get the most out of your daily kegel training – in just 30 minutes a day. Sensitive sensors respond to muscle contractions, and the egg vibrates when you've done your exercises correctly! Don't sweat it – Gvibe Gballs 3 makes kegel training effortless and fun!