# SCHELL vs KMT Tracer VMS

The clearest difference is device support: KMT Tracer VMS at 3 against SCHELL's 1. KMT Tracer VMS also leads on iOS requirement (15.0 vs 17.2). On price, 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.

## The numbers

| Metric | SCHELL | KMT Tracer VMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Size | 183 MB | 256 MB |
| Requires iOS | 17.2 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SCHELL Armaturentechnologe GmbH & Co KG](https://appshunter.io/developer/1151157542) | [KMT GmbH](https://appshunter.io/developer/1117788980) |

## What reviewers say

### SCHELL

[App page](https://appshunter.io/ios/app/schell/id6444608310)

**Features:** Vision Pro support

**In-app purchases:** none


### KMT Tracer VMS

[App page](https://appshunter.io/ios/app/kmt-tracer-vms/id6748647375)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SCHELL free?

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

### Is KMT Tracer VMS free?

KMT Tracer VMS is free to download, with no in-app purchases.

### Do SCHELL or KMT Tracer VMS have ads?

Neither SCHELL nor KMT Tracer VMS shows ads.

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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.*