Elvie Trainer by Elvie . Pelvic floor exerciser. An award-winning, small, ergonomic Kegel exerciser. This effective device helps women to exercise the group of muscles that influence different aspects; such as torso stability, bladder control, and intimate wellness. With the help of the app, Elvie Trainer offers 5-minute exercises designed by experts. Its technology measures force and movement, thereby helping to improve and detect possible incorrect contractions.