# metasonic® Doc Client vs STM

The clearest difference is update cadence: STM at monthly against metasonic® Doc Client's every 5 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.

metasonic® Doc Client ships an update every 5 months, STM monthly. The most recent releases landed on October 1, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | metasonic® Doc Client | STM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Size | 29 MB | 72 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Allgeier Inovar GmbH](https://appshunter.io/developer/532521228) | [TIL HENRY KLOSE](https://appshunter.io/developer/1701600321) |

## What reviewers say

### metasonic® Doc Client

[App page](https://appshunter.io/ios/app/metasonic-doc-client/id594487829)

**In-app purchases:** none


### STM

[App page](https://appshunter.io/ios/app/stm/id6473781207)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is metasonic® Doc Client free?

metasonic® Doc Client is free to download, with no in-app purchases.

### Is STM free?

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

### Do metasonic® Doc Client or STM have ads?

Neither metasonic® Doc Client nor STM shows ads.

### Which is updated more often, metasonic® Doc Client or STM?

metasonic® Doc Client ships an update every 5 months, and STM monthly. Most recently, metasonic® Doc Client was updated on October 1, 2026 and STM on September 18, 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.*