# WingFrequency vs AIRS

The clearest difference is price: AIRS at Free against WingFrequency's $1.99. AIRS also leads on update cadence (every 10 days vs every 53 months). WingFrequency's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

AIRS is free to download; WingFrequency costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

WingFrequency ships an update every 53 months, AIRS every 10 days. The most recent releases landed on July 7, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | WingFrequency | AIRS |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 53 months | **Every 10 days** |
| Monetization | Paid | — |
| Size | 62 MB | 26 MB |
| Requires iOS | **11.0** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Control-J](https://appshunter.io/developer/1205219823) | [International Safety Systems Pty Ltd](https://appshunter.io/developer/1566985871) |

## What reviewers say

### WingFrequency

[App page](https://appshunter.io/ios/app/wingfrequency/id1205219824)

This app simplifies measuring glider wing frequency. Place your device on the wingtip, initiate the measurement, and gently rock the wing. The app automatically calculates and displays the resonant frequency, typically within 15 seconds and accurate to +/- 1 beat per second.

**Highlights:** Automatic frequency calculation, Uses device sensors, Stable measurement detection, Accurate to +/- 1 beat per second, Quick measurement (approx. 15 seconds)

**Features:** macOS Compatibility

**In-app purchases:** none


### AIRS

[App page](https://appshunter.io/ios/app/airs/id1556168243)

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

**In-app purchases:** none


## Frequently asked questions

### Is WingFrequency free?

WingFrequency costs $1.99, with no in-app purchases.

### Is AIRS free?

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

### Do WingFrequency or AIRS have ads?

AIRS shows ads; WingFrequency does not.

### Which is updated more often, WingFrequency or AIRS?

WingFrequency ships an update every 53 months, and AIRS every 10 days. Most recently, WingFrequency was updated on July 7, 2026 and AIRS 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.*