Pollen is a service that allows users to keep track of their pollen allergy. It provides information on the pollen count, the weather, and other factors that can affect the severity of the allergy.

Users can enter information on their condition, such as details on the symptoms, when the first symptom appeared, how often they are affected, and what kind of treatments they use. The service also allows users to enter information on their medication, including information on the dosage and frequency of use.

The service also allows users to keep a personal record of their allergy symptoms. This can be done by adding the date and the symptoms.