Overactive bladder (OB) is a condition that affects about 30 percent of men and 40 percent of women in the United States. It is characterized by an increased need for urgent urination, which often causes involuntary leakage of urine. On the other hand, there is evidence of a lack of adherence to conventional treatments for OB patients, most of which are invasive or medicated. For this reason, the goal is to develop a non-invasive, portable device that will stimulate the posterior tibial nerve for the management of urinary incontinence caused by OB. A five-stage methodology is proposed for the development of this project. The first stage is to identify the needs of the population with OB. The second stage is the simulation of the analogue prototype. The third stage is the design and construction of the analogical electro-stimulation prototype. In the fourth stage, the technical and electronic components for planning the digitization of the analog device are identified. Finally, in the fifth stage, a clinical trial is planned to test the device's efficacy and effectiveness in OB urinary incontinence by stimulating the posterior tibial nerve. The preliminary result is in phase three of the project in which the low-cost analogue and portable prototype was developed.