# K vs Feather squadron 2

The clearest difference is update cadence: Feather squadron 2 at every 5 days against K's every 3 months. K's advantage is iOS requirement (15.0 vs 17.6). 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.

K ships an update every 3 months, Feather squadron 2 every 5 days. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | K | Feather squadron 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/k-d-balance/id1389928582/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 147 MB | 18 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [King-Devick Test, LLC](https://appshunter.io/developer/424793545) | [Acoustic Pioneer](https://appshunter.io/developer/619517178) |

## What reviewers say

### K

[App page](https://appshunter.io/ios/app/k-d-balance/id1389928582)

This medical app helps healthcare professionals assess vestibular dysfunction by measuring balance stance metrics. It uses a device's accelerometer to objectively score balance after voice-guided exercises. Professionals can track patient progress over time.

**Highlights:** Vestibular dysfunction assessment, Measures balance stance metrics, Uses device accelerometer, Objective balance scoring, Longitudinal patient assessment, Voice-guided exercises

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

**In-app purchases:** none


### Feather squadron 2

[App page](https://appshunter.io/ios/app/feather-squadron-2/id6670747895)

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

**In-app purchases:** none


## Frequently asked questions

### Is K free?

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

### Is Feather squadron 2 free?

Feather squadron 2 is free to download, with no in-app purchases.

### Do K or Feather squadron 2 have ads?

Neither K nor Feather squadron 2 shows ads.

### Which is updated more often, K or Feather squadron 2?

K ships an update every 3 months, and Feather squadron 2 every 5 days. Most recently, K was updated on October 24, 2026 and Feather squadron 2 on October 30, 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.*