# Ammann ServiceLink vs PMYun

The clearest difference is device support: PMYun at 3 against Ammann ServiceLink's 1. PMYun also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ammann ServiceLink ships an update every 3 weeks, PMYun every 6 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Ammann ServiceLink | PMYun |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Size | 26 MB | 44 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ammann Switzerland Ltd](https://appshunter.io/developer/1036134398) | [Dongguan Tuancheng Automation Equipment Co., Ltd.](https://appshunter.io/developer/1181389850) |

## What reviewers say

### Ammann ServiceLink

[App page](https://appshunter.io/ios/app/ammann-servicelink/id1625684569)

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

**In-app purchases:** none


### PMYun

[App page](https://appshunter.io/ios/app/pmyun/id6444041999)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ammann ServiceLink free?

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

### Is PMYun free?

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

### Do Ammann ServiceLink or PMYun have ads?

Neither Ammann ServiceLink nor PMYun shows ads.

### Which is updated more often, Ammann ServiceLink or PMYun?

Ammann ServiceLink ships an update every 3 weeks, and PMYun every 6 weeks. Most recently, Ammann ServiceLink was updated on November 7, 2026 and PMYun on November 3, 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.*