# A03 PRO vs CIAS

The clearest difference is update cadence: CIAS at every 5 weeks against A03 PRO's every 32 months. A03 PRO's advantage is iOS requirement (11.0 vs 15). 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.

A03 PRO ships an update every 32 months, CIAS every 5 weeks. The most recent releases landed on September 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | A03 PRO | CIAS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 5 weeks** |
| Size | 27 MB | 68 MB |
| Requires iOS | **11.0** | 15 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DEA Security](https://appshunter.io/developer/1355798100) | [Cias Elettronica Srl](https://appshunter.io/developer/1179992646) |

## What reviewers say

### A03 PRO

[App page](https://appshunter.io/ios/app/a03-pro/id1355798101)

**Features:** macOS Compatibility

**In-app purchases:** none


### CIAS

[App page](https://appshunter.io/ios/app/cias/id1612665779)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is A03 PRO free?

A03 PRO is free to download, with no in-app purchases.

### Is CIAS free?

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

### Do A03 PRO or CIAS have ads?

Neither A03 PRO nor CIAS shows ads.

### Which is updated more often, A03 PRO or CIAS?

A03 PRO ships an update every 32 months, and CIAS every 5 weeks. Most recently, A03 PRO was updated on September 18, 2026 and CIAS 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.*