The present invention relates to a mixer and applicator device for mixing and applying a compound obtained by means of mixing two products which comprises: a casing which internally houses a movable push rod, where the casing allows housing a container which is fixed to the casing, a drill or rotor for driving the movable push rod, a base part coupled to a rear portion of the drill or rotor, at least one guide which is secured at a first end on the base part and at a second end on the casing where the ends of the at least one guide are fixed on the casing such that the at least one guide allows the fixing and rotation of the casing, and at least one member going through the at least one guide respectively such that the rotation of the casing does not take place in response to the actuation of the drill or rotor. As a result of this device it is possible, using the same device, to prepare a compound by means of mixing a base product and a catalyst and to further be able to dispense it without having to perform any disassembly or adaptation whatsoever in the container or in the means used for the mixing.