# Flow vs Aeternum AirOps

The clearest difference is update cadence: Flow at monthly against Aeternum AirOps's every 3 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.

Flow ships an update monthly, Aeternum AirOps every 3 months. The most recent releases landed on November 9, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Flow | Aeternum AirOps |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (27 ratings)](https://appshunter.io/ios/app/flow-air-pollution-sensor/id1332618814/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 19.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free | — |
| Size | 69 MB | 20 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Plume Labs](https://appshunter.io/developer/950289242) | [Aeternum Innovations LTD](https://appshunter.io/developer/1677934702) |

## What reviewers say

### Flow

[App page](https://appshunter.io/ios/app/flow-air-pollution-sensor/id1332618814)

This app visualizes air quality data collected by a personal sensor. It helps users understand their exposure to pollutants like PM2.5, PM10, NO2, and VOCs, offering insights to find cleaner air routes and identify pollution hotspots.

**Highlights:** Real-time pollution tracking (PM2.5, PM10, NO2, VOCs), Personal exposure reports, Air Quality Index (AQI) monitoring, Clean air route finding, Pollution hotspot identification, Daily and live data analysis

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

**In-app purchases:** none


### Aeternum AirOps

[App page](https://appshunter.io/ios/app/aeternum-airops/id6446434890)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flow free?

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

### Is Aeternum AirOps free?

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

### Do Flow or Aeternum AirOps have ads?

Neither Flow nor Aeternum AirOps shows ads.

### Which is updated more often, Flow or Aeternum AirOps?

Flow ships an update monthly, and Aeternum AirOps every 3 months. Most recently, Flow was updated on November 9, 2026 and Aeternum AirOps on October 27, 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.*