# DUO System vs Squab Storage

The clearest difference is update cadence: Squab Storage at every 5 weeks against DUO System's every 9 months. DUO System's advantage is iOS requirement (12.0 vs 15.1). 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.

DUO System ships an update every 9 months, Squab Storage every 5 weeks. The most recent releases landed on October 5, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | DUO System | Squab Storage |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 15 MB | 61 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACI srl](https://appshunter.io/developer/1124362356) | [Pigeon Enterprises Ltd](https://appshunter.io/developer/1657542360) |

## What reviewers say

### DUO System

[App page](https://appshunter.io/ios/app/duo-system/id1492297534)

Easily program Farfisa Duo System devices with this intuitive application. Streamline your device setup and configuration process.

**Highlights:** Program Farfisa Duo System devices, Intuitive interface, Streamlined configuration, Device setup assistance

**Features:** macOS Compatibility

**In-app purchases:** none


### Squab Storage

[App page](https://appshunter.io/ios/app/squab-storage/id6444872871)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is DUO System free?

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

### Is Squab Storage free?

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

### Do DUO System or Squab Storage have ads?

Neither DUO System nor Squab Storage shows ads.

### Which is updated more often, DUO System or Squab Storage?

DUO System ships an update every 9 months, and Squab Storage every 5 weeks. Most recently, DUO System was updated on October 5, 2026 and Squab Storage on October 11, 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.*