# Master IOT vs DuoSmart

The clearest difference is rating: Master IOT at 5.0 against DuoSmart's 4.2. Master IOT also leads on update cadence (every 4 months vs every 9 months). DuoSmart's advantage is ratings volume (19 vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Master IOT holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 4 and 19 respectively.

Master IOT ships an update every 4 months, DuoSmart every 9 months. The most recent releases landed on September 10, 2026 and August 6, 2026 respectively.

## The numbers

| Metric | Master IOT | DuoSmart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/master-iot/id1448801746/reviews)** | [4.2 (19 ratings)](https://appshunter.io/ios/app/duosmart/id1494085580/reviews) |
| Number of ratings | 4 | **19** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 9 months |
| Monetization | Free | Free |
| Size | 177 MB | 196 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Innovacion Master](https://appshunter.io/developer/1270801341) | [Tecnosinergia](https://appshunter.io/developer/1448400951) |

## What reviewers say

### Master IOT

[App page](https://appshunter.io/ios/app/master-iot/id1448801746)

Remotely manage home appliances from anywhere using your smartphone. This app allows you to add and control multiple smart devices simultaneously, with voice control integration for added convenience. Receive real-time alerts to ensure your home's safety and easily share device access with family members.

**Highlights:** Remote appliance control, Multi-device management, Voice control integration, Real-time safety alerts, Family device sharing, Easy device connection

**Features:** macOS Compatibility

**In-app purchases:** none


### DuoSmart

[App page](https://appshunter.io/ios/app/duosmart/id1494085580)

Manage all your smart devices from one app. Control compatible devices, use voice commands, and create custom scenes based on conditions like temperature or time. Receive real-time alerts for enhanced security and easily share device access.

**Highlights:** Remote control for DuoSmart and Tuya devices, Voice control with Amazon Echo and Google Assistant, Create custom automation scenes, Real-time security alerts, Share device access easily, Control multiple devices simultaneously

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Master IOT free?

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

### Is DuoSmart free?

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

### Which has better reviews, Master IOT or DuoSmart?

Master IOT is rated higher. Master IOT averages 5.0 out of 5 from 4 ratings, while DuoSmart averages 4.2 from 19 ratings.

### Do Master IOT or DuoSmart have ads?

Neither Master IOT nor DuoSmart shows ads.

### Which is updated more often, Master IOT or DuoSmart?

Master IOT ships an update every 4 months, and DuoSmart every 9 months. Most recently, Master IOT was updated on September 10, 2026 and DuoSmart on August 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*