# Fybra vs USM lock C

The clearest difference is iOS requirement: Fybra at 13.0 against USM lock C's 15.6. 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.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Fybra | USM lock C |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Size | 42 MB | 47 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gaetano Lapenta](https://appshunter.io/developer/1574662022) | [USM U. Schaerer Soehne AG](https://appshunter.io/developer/395765701) |

## What reviewers say

### Fybra

[App page](https://appshunter.io/ios/app/fybra/id1522479898)

**Features:** macOS Compatibility

**In-app purchases:** none


### USM lock C

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fybra free?

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

### Is USM lock C free?

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

### Do Fybra or USM lock C have ads?

Neither Fybra nor USM lock C shows ads.

### Which is updated more often, Fybra or USM lock C?

Fybra ships an update every 3 months, and USM lock C every 3 months. Most recently, Fybra was updated on October 14, 2026 and USM lock C on October 7, 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.*