An inhalation device for inhaling a vaporized substance that includes metering capabilities to inform a user when a particular amount of substance has been consumed. The inhalation device can include an inlet, an outlet, a channel positioned between the inlet and outlet. The device can further include an atomizer positioned between the inlet and the outlet and configured to vaporize an unvaporized substance into a vaporized substance, where the vaporized substance flows downstream from the atomizer to the outlet via the channel. The inhalation device can further include an airflow sensor positioned upstream of the flow of the vaporized substance, where the airflow sensor is configured to acquire information on the flow of air from the inlet.
