# ZYRTEC® ALLERGYCAST® vs FluStar

The clearest difference is rating: ZYRTEC® ALLERGYCAST® at 4.2 against FluStar's 2.3. ZYRTEC® ALLERGYCAST® also leads on review sentiment (40% vs 0%) and ads (none vs shown). FluStar's advantage is update cadence (fortnightly vs every 2 months) and monetization model (ad-supported vs free with in-app purchases). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ZYRTEC® ALLERGYCAST® holds the better App Store score, 4.2 against 2.3. That said, the two scores are not equally well evidenced: ZYRTEC® ALLERGYCAST® has 544 ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 40% of ZYRTEC® ALLERGYCAST®'s written reviews are positive against 0% of FluStar's.

ZYRTEC® ALLERGYCAST® ships an update every 2 months, FluStar fortnightly. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | ZYRTEC® ALLERGYCAST® | FluStar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (544 ratings)](https://appshunter.io/ios/app/zyrtec-allergycast/id320298020/reviews)** | [2.3 (13 ratings)](https://appshunter.io/ios/app/flustar-flu-tracker/id1483474643/reviews) |
| Number of ratings | **544** | 13 |
| Positive reviews | **40.2% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 9 MB | 22 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [McNeil-PPC, Inc](https://appshunter.io/developer/320298023) | [IQVIA Inc.](https://appshunter.io/developer/376388241) |

## What reviewers say

### ZYRTEC® ALLERGYCAST®

[App page](https://appshunter.io/ios/app/zyrtec-allergycast/id320298020)

This app provides personalized allergy forecasts and pollen counts based on local data like pollen, air quality, and weather. Track your symptoms to receive daily predictions and multi-day forecasts, helping you manage seasonal allergies effectively.

**Highlights:** Personalized allergy impact score, Daily symptom severity predictions, Multi-day pollen and weather forecasts, Interactive pollen and air quality maps, Symptom tracker and Allergy Profile, Personalized allergy insights, Exclusive ZYRTEC savings

**Features:** Vision Pro support

**In-app purchases:** none


### FluStar

[App page](https://appshunter.io/ios/app/flustar-flu-tracker/id1483474643)

Track current cold and flu activity by ZIP code across the US. Get information on influenza symptoms, past epidemics, and how to differentiate between a cold and the flu.

**Highlights:** Real-time flu activity by ZIP code, Cold and flu symptom information, Educational content on influenza, Data on past flu epidemics, Distinguish between cold and flu

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZYRTEC® ALLERGYCAST® free?

ZYRTEC® ALLERGYCAST® is free to download, with no in-app purchases.

### Is FluStar free?

FluStar is free to download, with no in-app purchases.

### Which has better reviews, ZYRTEC® ALLERGYCAST® or FluStar?

ZYRTEC® ALLERGYCAST® is rated higher. ZYRTEC® ALLERGYCAST® averages 4.2 out of 5 from 544 ratings, while FluStar averages 2.3 from 13 ratings.

### Do ZYRTEC® ALLERGYCAST® or FluStar have ads?

FluStar shows ads; ZYRTEC® ALLERGYCAST® does not.

### Which is updated more often, ZYRTEC® ALLERGYCAST® or FluStar?

ZYRTEC® ALLERGYCAST® ships an update every 2 months, and FluStar fortnightly. Most recently, ZYRTEC® ALLERGYCAST® was updated on October 16, 2026 and FluStar on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*