A set including a pump dispenser for discharging pharmaceutical or cosmetic liquids and an external evaluation unit, which is designed to be exchangeable so that, after the pump dispenser has been emptied, the evaluation unit can be attached to a new pump dispenser. The evaluation unit can be attached to the discharging head of the pump dispenser such that the evaluation unit detects an actuation button and can be partially displaced with same. The evaluation unit can alternatively have a receiving container which is open on at least one side and into which the pump dispenser can be inserted and the force application of which is detected on actuation.