# USM lock C vs ChaosControl.gg

The clearest difference is in-app purchases: USM lock C at none against ChaosControl.gg's 3. USM lock C also leads on iOS requirement (15.6 vs 18.5). ChaosControl.gg's advantage is update cadence (every 4 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. ChaosControl.gg sells 3 in-app purchases, starting at $3.00 per month. USM lock C asks for nothing beyond the download.

USM lock C ships an update every 3 months, ChaosControl.gg every 4 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | USM lock C | ChaosControl.gg |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Size | 47 MB | 145 MB |
| Requires iOS | **15.6** | 18.5 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [USM U. Schaerer Soehne AG](https://appshunter.io/developer/395765701) | [Junes Jallil Weber](https://appshunter.io/developer/1828850537) |

## What reviewers say

### USM lock C

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

**Features:** macOS Compatibility

**In-app purchases:** none


### ChaosControl.gg

[App page](https://appshunter.io/ios/app/chaoscontrolgg/id6749126974)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Supporter | $3.00 | per month |
| Contributor | $5.00 | per month |
| VIP | $10.00 | per month |


## Frequently asked questions

### Is USM lock C free?

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

### Is ChaosControl.gg free?

ChaosControl.gg is free to download, with in-app purchases available.

### Do USM lock C or ChaosControl.gg have ads?

Neither USM lock C nor ChaosControl.gg shows ads.

### Which is updated more often, USM lock C or ChaosControl.gg?

USM lock C ships an update every 3 months, and ChaosControl.gg every 4 days. Most recently, USM lock C was updated on October 30, 2026 and ChaosControl.gg on October 28, 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.*