# Flexcon PA vs Air Flow Conversion Calculator

The clearest difference is price: Flexcon PA at Free against Air Flow Conversion Calculator's $2.99. Flexcon PA also leads on update cadence (every 4 months vs every 47 months). Air Flow Conversion Calculator's advantage is iOS requirement (12.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

Flexcon PA is free to download; Air Flow Conversion Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Flexcon PA ships an update every 4 months, Air Flow Conversion Calculator every 47 months. The most recent releases landed on September 10, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Flexcon PA | Air Flow Conversion Calculator |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | — | **[3.5 (11 ratings)](https://appshunter.io/ios/app/air-flow-conversion-calculator/id1375810553/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 47 months |
| Monetization | — | Paid |
| Size | 33 MB | 8 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Flamco Group](https://appshunter.io/developer/631212130) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### Flexcon PA

[App page](https://appshunter.io/ios/app/flexcon-pa/id1213321960)

**Features:** macOS Compatibility

**In-app purchases:** none


### Air Flow Conversion Calculator

[App page](https://appshunter.io/ios/app/air-flow-conversion-calculator/id1375810553)

Easily calculate air velocity and airflow volume for various duct types. Input dimensions and units, and get instant results for HVAC and ventilation applications.

**Highlights:** Calculate air velocity and airflow volume, Support for circular and rectangular ducts, Multiple unit options for velocity, volume, and dimensions, Instant result display, Useful for HVAC and ventilation

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

**In-app purchases:** none


## Frequently asked questions

### Is Flexcon PA free?

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

### Is Air Flow Conversion Calculator free?

Air Flow Conversion Calculator costs $2.99, with no in-app purchases.

### Do Flexcon PA or Air Flow Conversion Calculator have ads?

Neither Flexcon PA nor Air Flow Conversion Calculator shows ads.

### Which is updated more often, Flexcon PA or Air Flow Conversion Calculator?

Flexcon PA ships an update every 4 months, and Air Flow Conversion Calculator every 47 months. Most recently, Flexcon PA was updated on September 10, 2026 and Air Flow Conversion Calculator on September 18, 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.*