Inclusion Criteria:  ≥ 6 episodes urgency incontinence on 3-day voiding diary Duration of symptoms ≥ 3 months Off antimuscarinic or 3-adrenoreceptor agonist therapy for 2 weeks No known neurologic disease Ability to complete home sessions and clinic follow up Ability to complete voiding diaries Internet access and proficiency English or Spanish-speaking  Exclusion Criteria:  Pregnant Known or suspected urinary retention Symptomatic urinary tract infection unresolved at the time of randomization Recurrent urinary tract infection (≥ 3/12 months) Bladder pain syndrome Known or suspected advanced (stage III or IV) pelvic organ prolapse Neurogenic bladder Current or prior bladder malignancy Current or previous use of bladder Botox injections, percutaneous tibial nerve stimulation, or sacral neuromodulation Pacemaker or other implantable device Disease affecting lower extremities Bilateral metallic lower limb implant Incarceration