# SIGMA AOSTA vs Proteus

The clearest difference is update cadence: Proteus at every 10 months against SIGMA AOSTA's every 33 months. Proteus also leads on device support. SIGMA AOSTA's advantage is iOS requirement (11.0 vs 15.0). On price 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 AOSTA ships an update every 33 months, Proteus every 10 months. The most recent releases landed on September 8, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | SIGMA AOSTA | Proteus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/proteus-1/id6469808073/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 33 months | **Every 10 months** |
| Monetization | — | Free |
| Size | 22 MB | 78 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [ID&A S.r.l.](https://appshunter.io/developer/1446283055) | [allSYSTEM 1 srl](https://appshunter.io/developer/1454276533) |

## What reviewers say

### SIGMA AOSTA

[App page](https://appshunter.io/ios/app/sigma-aosta/id6463710239)

**In-app purchases:** none


### Proteus

[App page](https://appshunter.io/ios/app/proteus-1/id6469808073)

An integrated security system for managing intrusion detection, video surveillance, video verification, and fire prevention. It also offers monitoring and rapid intervention services.

**Highlights:** Intrusion detection management, Video surveillance, Video verification, Fire prevention, Monitoring service, Rapid intervention

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

**In-app purchases:** none


## Frequently asked questions

### Is SIGMA AOSTA free?

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

### Is Proteus free?

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

### Which is updated more often, SIGMA AOSTA or Proteus?

SIGMA AOSTA ships an update every 33 months, and Proteus every 10 months. Most recently, SIGMA AOSTA was updated on September 8, 2026 and Proteus on September 22, 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.*