# OR952DI vs DUO System

The clearest difference is update cadence: OR952DI at every 2 months against DUO System's every 9 months. OR952DI also leads on iOS requirement (7.0 vs 12.0). 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.

OR952DI ships an update every 2 months, DUO System every 9 months. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | OR952DI | DUO System |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | — | Free |
| Size | 4 MB | 15 MB |
| Requires iOS | **7.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tecno Switch S.r.l.](https://appshunter.io/developer/1316953183) | [Aci Farfisa](https://appshunter.io/developer/1124362356) |

## What reviewers say

### OR952DI

[App page](https://appshunter.io/ios/app/or952di/id1391010390)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is OR952DI free?

OR952DI is free to download, with no in-app purchases.

### Is DUO System free?

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

### Do OR952DI or DUO System have ads?

Neither OR952DI nor DUO System shows ads.

### Which is updated more often, OR952DI or DUO System?

OR952DI ships an update every 2 months, and DUO System every 9 months. Most recently, OR952DI was updated on October 7, 2026 and DUO System on October 5, 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.*