Pollen Journal for iPhone brings local pollen forecasts to you based on publicly available data and algorithms published in scientific papers. It also helps you find out exactly which pollens you are allergic to by tracking your allergy symptoms over a period of time. Key features are three day pollen level forecasts for any US zip code, auto-find your current location, log your symptoms for cross reference with pollen levels and types, log any other allergens and medications you take today, cross reference non-pollen allergens and medications with allergy symptom, edit past journal entries, and all personal data stored on the device to protect privacy.