ZYRTEC® ALLERGYCAST®

• Free

Last verified 31 Jul 2026

4.2 544 ratings · App Store

1. 4/5Pretty good app

   This is one of the better pollen-count apps I’ve used. It’s easy to navigate and it gives you all sorts of information about weather and how it effects pollen count and subsequently your allergies, as well as the pollen forecast. I already know what I’m allergic to so the app didn’t really change much for me. I do wish for some feature changes/ additions: on the tracking log I wish there were check marks for asthma and itchy skin; instead it’s all upper respiratory symptoms. Which I understand with it being a Zyrtec app. It’d also be nice to have a place to check off what pollens you *know* you’re allergic to and get notifications on days when those specific allergens are high. Maybe they’ll see this comment. Regardless it’s a good app to have.

   Mgierhart1987 · 31 Jul 2026

2. 5/5Love this app! Best allergy website or app I have found!

   I have used this app for many years, I highly recommend it! Becaus of this app I was able to figure out I’m always sickest when juniper is listed and molds. I was able to tell my allergist who tested for those and more, and it did turn out I was in fact most allergic to those. As we moved, I’ve been allergic to different things and it’s helped me narrow down what causes the most reaction or when I’m on vacation sometimes I will start feeling sick, not sure if I’m coming down with something, often I’ll check the app and find that where I’m at is high in mold or juniper. It’s fun to learn how easily my body detects certain allergens and also more easily help figure out whether I may just be coming down with a cold. I also like the forecast part of it, and have found that to be reliable too. I love this app!

   Be Kind1 · 31 Jul 2026

3. 4/5Good Experience

   I am a newbie but I am having a good experience so far. I really like the fact that I can take a look at what is high in our area. I am also doing the logging in so that I can determine what I’m most allergic to based on the information that the app will provide me. I’m very excited about this. I will continue to use the app. Unfortunately I’m not a daily user but who knows. I will update my review in a couple of months to see where I stand since most of the concerns seem to be after you’ve been using the app a few months.

   Green getaway · 31 Jul 2026

4. 1/5Doesn’t Work

   I downloaded the Zyrtec app yesterday (May 5, 2025) because I suffer from severe allergies and needed a reliable way to monitor pollen levels. Initially, the app performed excellently, providing quick and accurate information. However, this afternoon, my wife and I went for a walk, so we drove to the park and I opened the app, but it failed to function! I tried restarting my phone and the app multiple times, but it was still unresponsive, showing a message that it was calculating. Despite my efforts, it continued to display “calculating” without any results. After our walk, I kept the app open to see if it would eventually provide an update. After 56 minutes, it was still stuck on calculating. I’m very disappointed that I couldn’t depend on the app for information before my walk. As a result, I’ve decided to delete the app. If I can’t trust it to work properly the first time I really need it, I doubt its reliability in the future. It raises concerns about the accuracy of the information it provides, especially if it can’t even deliver basic updates or notify users of system issues. For me, this is an easy decision, and I will delete it after posting this review. So, proceed with caution if you choose to use it. It may or may not function as intended. Good luck.

   Stickman428 · 31 Jul 2026

5. 3/5Great MOST OF THE TIME

   This app does a great job at forecasting my symptoms and telling me the top allergens in the area. However, there are days that the app doesn’t work at all. Today is one of those days, it’s very frustrating. It says the pollen count is NaN/12 and that my symptom forecast is at the very bottom of the scale when I’ve been having the worst allergies of my life. It won’t even let me log symptoms. I deleted the app, logged in and out, redownloaded it, everything. And it’s still this way. I’d love to know if everyone is having this issue or if it’s just mine. Hopefully they fix it soon so I can get back to being in the know about my allergies.

   Lauren2114 · 31 Jul 2026

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