"Overactive Bladder Symptom Score - Urine Tracker" is a mobile app that uses Overactive Bladder Symptom Score (OABSS) questionnaire for evaluation of overactive bladder (OAB). OAB is a common symptom syndrome with urgency, urinary frequency, and urgency incontinence. OABSS questionnaire in "Overactive Bladder Symptom Score - Urine Tracker" app was designed to quantify OAB symptoms. OABSS questionnaire contains questions that address four symptoms of OAB, namely daytime frequency, nighttime frequ