# Portable Interview vs AirFlow | Breath Control

The clearest difference is price: Portable Interview at Free against AirFlow | Breath Control's $1.99. AirFlow | Breath Control's advantage is update cadence (daily vs every 8 days) and iOS requirement (18.2 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

Portable Interview is free to download; AirFlow | Breath Control costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Portable Interview ships an update every 8 days, AirFlow | Breath Control daily. The most recent releases landed on October 22, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Portable Interview | AirFlow | Breath Control |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 days | **Daily** |
| Size | 42 MB | 3 MB |
| Requires iOS | 26.0 | **18.2** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Sectiva AS](https://appshunter.io/developer/1777408791) | [Thomas Swatland](https://appshunter.io/developer/1143709342) |

## What reviewers say

### Portable Interview

[App page](https://appshunter.io/ios/app/portable-interview/id6737690870)

**In-app purchases:** none


### AirFlow | Breath Control

[App page](https://appshunter.io/ios/app/airflow-breath-control/id6743000537)

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

**In-app purchases:** none


## Frequently asked questions

### Is Portable Interview free?

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

### Is AirFlow | Breath Control free?

AirFlow | Breath Control costs $1.99, with no in-app purchases.

### Do Portable Interview or AirFlow | Breath Control have ads?

Neither Portable Interview nor AirFlow | Breath Control shows ads.

### Which is updated more often, Portable Interview or AirFlow | Breath Control?

Portable Interview ships an update every 8 days, and AirFlow | Breath Control daily. Most recently, Portable Interview was updated on October 22, 2026 and AirFlow | Breath Control on October 20, 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.*