# Dr. Hahn Instructions vs Swing Door Servicing Tool

The clearest difference is update cadence: Swing Door Servicing Tool at every 2 months against Dr. Hahn Instructions's every 15 months. Dr. Hahn Instructions's advantage is iOS requirement (11.0 vs 15.0). 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.

Dr. Hahn Instructions ships an update every 15 months, Swing Door Servicing Tool every 2 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Dr. Hahn Instructions | Swing Door Servicing Tool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 2 months** |
| Size | 18 MB | 63 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Team Stiefelhagen Werbeagentur GmbH](https://appshunter.io/developer/1031243988) | [ASSA ABLOY Entrance Systems AB](https://appshunter.io/developer/1498896925) |

## What reviewers say

### Dr. Hahn Instructions

[App page](https://appshunter.io/ios/app/dr-hahn-instructions/id1147190358)

**Features:** macOS Compatibility

**In-app purchases:** none


### Swing Door Servicing Tool

[App page](https://appshunter.io/ios/app/swing-door-servicing-tool/id6742798234)

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

**In-app purchases:** none


## Frequently asked questions

### Is Dr. Hahn Instructions free?

Dr. Hahn Instructions is free to download, with no in-app purchases.

### Is Swing Door Servicing Tool free?

Swing Door Servicing Tool is free to download, with no in-app purchases.

### Do Dr. Hahn Instructions or Swing Door Servicing Tool have ads?

Neither Dr. Hahn Instructions nor Swing Door Servicing Tool shows ads.

### Which is updated more often, Dr. Hahn Instructions or Swing Door Servicing Tool?

Dr. Hahn Instructions ships an update every 15 months, and Swing Door Servicing Tool every 2 months. Most recently, Dr. Hahn Instructions was updated on October 29, 2026 and Swing Door Servicing Tool 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.*