# SIGMA CIDIU vs VISCOM24 Qrcode Reader

The clearest difference is update cadence: SIGMA CIDIU at every 2 months against VISCOM24 Qrcode Reader's every 6 months. SIGMA CIDIU also leads on device support (3 vs 1) and iOS requirement (11.0 vs 16.0). On price, 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.

SIGMA CIDIU ships an update every 2 months, VISCOM24 Qrcode Reader every 6 months. Both last shipped on October 27, 2026.

## The numbers

| Metric | SIGMA CIDIU | VISCOM24 Qrcode Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Size | 21 MB | 5 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ID&A S.r.l.](https://appshunter.io/developer/1446283055) | [FIERA MILANO SPA](https://appshunter.io/developer/669068261) |

## What reviewers say

### SIGMA CIDIU

[App page](https://appshunter.io/ios/app/sigma-cidiu/id1544746166)

**Features:** macOS Compatibility

**In-app purchases:** none


### VISCOM24 Qrcode Reader

[App page](https://appshunter.io/ios/app/viscom24-qrcode-reader/id6466253127)

**In-app purchases:** none


## Frequently asked questions

### Is SIGMA CIDIU free?

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

### Is VISCOM24 Qrcode Reader free?

VISCOM24 Qrcode Reader is free to download, with no in-app purchases.

### Do SIGMA CIDIU or VISCOM24 Qrcode Reader have ads?

Neither SIGMA CIDIU nor VISCOM24 Qrcode Reader shows ads.

### Which is updated more often, SIGMA CIDIU or VISCOM24 Qrcode Reader?

SIGMA CIDIU ships an update every 2 months, and VISCOM24 Qrcode Reader every 6 months. Most recently, SIGMA CIDIU was updated on October 27, 2026 and VISCOM24 Qrcode Reader on October 27, 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.*