# KFU BT SCAN vs St.Gall Algorithm

The clearest difference is update cadence: St.Gall Algorithm at every 3 weeks against KFU BT SCAN's every 36 months. St.Gall Algorithm also leads on iOS requirement (13.0 vs 15.6). 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.

KFU BT SCAN ships an update every 36 months, St.Gall Algorithm every 3 weeks. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | KFU BT SCAN | St.Gall Algorithm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 3 weeks** |
| Size | 3 MB | 26 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [King Faisal University - جامعة الملك فيصل](https://appshunter.io/developer/570315734) | [HOCH Health Ostschweiz](https://appshunter.io/developer/1378566484) |

## What reviewers say

### KFU BT SCAN

[App page](https://appshunter.io/ios/app/kfu-bt-scan/id1456230790)

**Features:** macOS Compatibility

**In-app purchases:** none


### St.Gall Algorithm

[App page](https://appshunter.io/ios/app/stgall-algorithm/id6766456299)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is KFU BT SCAN free?

KFU BT SCAN is free to download, with no in-app purchases.

### Is St.Gall Algorithm free?

St.Gall Algorithm is free to download, with no in-app purchases.

### Do KFU BT SCAN or St.Gall Algorithm have ads?

Neither KFU BT SCAN nor St.Gall Algorithm shows ads.

### Which is updated more often, KFU BT SCAN or St.Gall Algorithm?

KFU BT SCAN ships an update every 36 months, and St.Gall Algorithm every 3 weeks. Most recently, KFU BT SCAN was updated on November 2, 2026 and St.Gall Algorithm on October 31, 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.*