A combined joint compound dispenser and applicator for corners comprises a cylinder mechanically attached to a tube extending therefrom. The cylinder pushes a compound by way of a piston. A ball joint provides an articulated connection between the tube and an applicator by way of an insertion shoe. The applicator has two flaps cojoined at an apex so as to form a > shape. The compound passes from the tube through the applicator by way of a slit, and that slit is formed by an arrow shaped element placed in front of a hole. The hole is at the apex. Wheels located on wedges allow the applicator to roll on walls. The wedges extend integrally from the flaps.