# Flow Smart v2 vs Air Quality index

The clearest difference is ads: Flow Smart v2 at none against Air Quality index's shown. Flow Smart v2 also leads on iOS requirement (11.0 vs 15.0). Air Quality index's advantage is update cadence (fortnightly vs monthly). 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.

Flow Smart v2 ships an update monthly, Air Quality index fortnightly. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Flow Smart v2 | Air Quality index |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flow-smart-v2/id1592230754/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Fortnightly** |
| Size | 40 MB | 5 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kwang Teck Lim](https://appshunter.io/developer/1592230756) | [Umer Musawir](https://appshunter.io/developer/1802325548) |

## What reviewers say

### Flow Smart v2

[App page](https://appshunter.io/ios/app/flow-smart-v2/id1592230754)

**Features:** macOS Compatibility

**In-app purchases:** none


### Air Quality index

[App page](https://appshunter.io/ios/app/air-quality-index/id6762090789)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flow Smart v2 free?

Flow Smart v2 is free to download, with no in-app purchases.

### Is Air Quality index free?

Air Quality index is free to download, with no in-app purchases.

### Do Flow Smart v2 or Air Quality index have ads?

Air Quality index shows ads; Flow Smart v2 does not.

### Which is updated more often, Flow Smart v2 or Air Quality index?

Flow Smart v2 ships an update monthly, and Air Quality index fortnightly. Most recently, Flow Smart v2 was updated on October 24, 2026 and Air Quality index on October 11, 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.*