ZYRTCAL® AllergyCast® is a free mobile app that makes personalizing your allergy management easy. It uses the same advanced technology that is in use by leading allergy experts, including Zyrtec®. You will receive a personalized symptom prediction based on how you feel and the data tracked in the app. And because it’s all calculated in real-time, it’s extremely accurate.

You can log your symptoms in a few simple steps, and after tracking your symptoms for a few days, you’ll start to receive daily symptom severity predictions. And the more consistently you log, the smarter and more personalized the predictions will become.