# DUO System vs InCMS

The clearest difference is iOS requirement: InCMS at 10.0 against DUO System's 12.0. On price, update cadence, 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.

DUO System ships an update every 9 months, InCMS every 10 months. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | DUO System | InCMS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 10 months |
| Monetization | Free | — |
| Size | 15 MB | 64 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACI srl](https://appshunter.io/developer/1124362356) | [宏宝 刘](https://appshunter.io/developer/1289135112) |

## 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


### InCMS

[App page](https://appshunter.io/ios/app/incms/id1508500777)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DUO System free?

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

### Is InCMS free?

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

### Do DUO System or InCMS have ads?

Neither DUO System nor InCMS shows ads.

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

DUO System ships an update every 9 months, and InCMS every 10 months. Most recently, DUO System was updated on October 5, 2026 and InCMS on September 30, 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.*