# Kayan Developments vs Bio link app

The clearest difference is update cadence: Kayan Developments at every 3 weeks against Bio link app's every 3 months. 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.

Kayan Developments ships an update every 3 weeks, Bio link app every 3 months. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Kayan Developments | Bio link app |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 37 MB | 88 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [BOYOT FOR SOFT WARE APPLICATIONS](https://appshunter.io/developer/1514515380) | [Ahmed Hassan](https://appshunter.io/developer/1896602239) |

## What reviewers say

### Kayan Developments

[App page](https://appshunter.io/ios/app/kayan-developments/id6738081219)

**Features:** macOS Compatibility

**In-app purchases:** none


### Bio link app

[App page](https://appshunter.io/ios/app/bio-link-app/id6777672578)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kayan Developments free?

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

### Is Bio link app free?

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

### Do Kayan Developments or Bio link app have ads?

Neither Kayan Developments nor Bio link app shows ads.

### Which is updated more often, Kayan Developments or Bio link app?

Kayan Developments ships an update every 3 weeks, and Bio link app every 3 months. Most recently, Kayan Developments was updated on October 11, 2026 and Bio link app on October 6, 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.*