# Cygnus Mobile Viewer vs X

The clearest difference is update cadence: X at weekly against Cygnus Mobile Viewer's every 58 months. 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.

Cygnus Mobile Viewer ships an update every 58 months, X weekly. The most recent releases landed on September 14, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Cygnus Mobile Viewer | X |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 58 months | **Weekly** |
| Size | 111 MB | 71 MB |
| Requires iOS | 8.0 | 8.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cygnus Electronics SA](https://appshunter.io/developer/1464839514) | [X-28](https://appshunter.io/developer/516352829) |

## What reviewers say

### Cygnus Mobile Viewer

[App page](https://appshunter.io/ios/app/cygnus-mobile-viewer/id1464839515)

**Features:** macOS Compatibility

**In-app purchases:** none


### X

[App page](https://appshunter.io/ios/app/x-28-monitoreo-duo/id1516018170)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cygnus Mobile Viewer free?

Cygnus Mobile Viewer is free to download, with no in-app purchases.

### Is X free?

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

### Do Cygnus Mobile Viewer or X have ads?

Neither Cygnus Mobile Viewer nor X shows ads.

### Which is updated more often, Cygnus Mobile Viewer or X?

Cygnus Mobile Viewer ships an update every 58 months, and X weekly. Most recently, Cygnus Mobile Viewer was updated on September 14, 2026 and X on September 8, 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.*