The disclosed interchangeable foot therapy massager includes an insert configured to couple and secure within a base. The base defines a cavity having a first section which has a first diameter and a second section which has a second diameter greater than the first diameter. The insert includes a pair of opposing sides and is configured to be received within the first and second sections of the cavity. The insert also includes a head for contacting the foot of the user, a lip for engaging the second section of the cavity, and defines a space which allows for inward flexure. Applying force to the sides of the insert causes the insert to flex inwardly and removing force from the sides of the insert causes the insert to flex outwardly. When the insert flexes outwardly the at least one lip engages the second section of the cavity.
