# CMC Swift vs XtraFibra

The clearest difference is update cadence: XtraFibra at every 3 days against CMC Swift's every 4 months. CMC Swift's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CMC Swift ships an update every 4 months, XtraFibra every 3 days. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | CMC Swift | XtraFibra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cmc-swift/id1498901607/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 127 MB | 71 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [OMICRON electronics GmbH](https://appshunter.io/developer/1233298257) | [Astera Global OU](https://appshunter.io/developer/1884388998) |

## What reviewers say

### CMC Swift

[App page](https://appshunter.io/ios/app/cmc-swift/id1498901607)

Control Omicron CMCs to output analog voltages and currents, feed in binary signals, or measure them. Perform wiring and control system checks, as well as trip tests for protective functions quickly and easily. It also facilitates polarity checks when used with a handheld CPOL device.

**Highlights:** Output analog voltages and currents, Feed in binary signals, Measure binary signals, Perform wiring and control system checks, Conduct trip tests for protective functions, Perform polarity checks with CPOL device

**Features:** macOS Compatibility

**In-app purchases:** none


### XtraFibra

[App page](https://appshunter.io/ios/app/xtrafibra/id6788462433)

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CMC Swift free?

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

### Is XtraFibra free?

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

### Do CMC Swift or XtraFibra have ads?

Neither CMC Swift nor XtraFibra shows ads.

### Which is updated more often, CMC Swift or XtraFibra?

CMC Swift ships an update every 4 months, and XtraFibra every 3 days. Most recently, CMC Swift was updated on October 7, 2026 and XtraFibra on October 6, 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.*