# USM lock C vs Zeliox NEO

The clearest difference is iOS requirement: Zeliox NEO at 13.0 against USM lock C's 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.

## The numbers

| Metric | USM lock C | Zeliox NEO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 47 MB | 28 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [USM U. Schaerer Soehne AG](https://appshunter.io/developer/395765701) | [Zeliox](https://appshunter.io/developer/1478320738) |

## What reviewers say

### USM lock C

[App page](https://appshunter.io/ios/app/usm-lock-c/id6467190717)

**Features:** macOS Compatibility

**In-app purchases:** none


### Zeliox NEO

[App page](https://appshunter.io/ios/app/zeliox-neo/id6751868794)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is USM lock C free?

USM lock C is free to download, with no in-app purchases.

### Is Zeliox NEO free?

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

### Do USM lock C or Zeliox NEO have ads?

Neither USM lock C nor Zeliox NEO 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.*