# AirAllergy vs Flow

The clearest difference is update cadence: Flow at every 4 days against AirAllergy's every 11 months. On price, ads, 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.

AirAllergy ships an update every 11 months, Flow every 4 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | AirAllergy | Flow |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 36 MB | 103 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Sciensano](https://appshunter.io/developer/1525518558) | [Procaryote](https://appshunter.io/developer/1591970439) |

## What reviewers say

### AirAllergy

[App page](https://appshunter.io/ios/app/airallergy/id6499262353)

Access real-time and historical pollen data for various locations. Get allergy risk forecasts, prevention tips, and receive notifications for allergen seasons. Stay informed about pollen allergies and their impact.

**Highlights:** Real-time pollen measurements, 14-day historical pollen data, 4-day allergy risk forecasts, Prevention tips for symptoms, FAQ on pollen allergies, Season start notifications

**Features:** macOS Compatibility

**In-app purchases:** none


### Flow

[App page](https://appshunter.io/ios/app/flow-digital-care-tools/id6605561149)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is AirAllergy free?

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

### Is Flow free?

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

### Do AirAllergy or Flow have ads?

Neither AirAllergy nor Flow shows ads.

### Which is updated more often, AirAllergy or Flow?

AirAllergy ships an update every 11 months, and Flow every 4 days. Most recently, AirAllergy was updated on October 30, 2026 and Flow on October 24, 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.*