The present invention relates to an inhalation training device and inhalation training system for practicing of an inhalation process of a patient. The inhalation training device comprises a housing attachable to and detachable from a mouthpiece of an inhaler designed to provide a drug to the patient and a microphone adapted to measure the airflow occurring in the mouthpiece of the inhaler during an inhalation process of the patient. The inhalation training system comprises the inhalation training device, an inhaler and an electronic device configured for evaluation of a signal received from the inhalation training device and for visual and/or audio feedback to the patient.
