# iViewer 4 vs Control4 for OS 3

The clearest difference is review sentiment: iViewer 4 at 80% against Control4 for OS 3's 22%. iViewer 4 also leads on rating (4.0 vs 3.0) and iOS requirement (8.0 vs 18.0). Control4 for OS 3's advantage is update cadence (fortnightly vs every 4 months) and ratings volume (576 vs 6). 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.

iViewer 4 holds the better App Store score, 4.0 against 3.0. That said, the two scores are not equally well evidenced: Control4 for OS 3 has 576 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 80% of iViewer 4's written reviews are positive against 22% of Control4 for OS 3's.

iViewer 4 ships an update every 4 months, Control4 for OS 3 fortnightly. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | iViewer 4 | Control4 for OS 3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (6 ratings)](https://appshunter.io/ios/app/iviewer-4/id451480063/reviews)** | [3.0 (576 ratings)](https://appshunter.io/ios/app/control4-for-os-3/id1320153814/reviews) |
| Number of ratings | 6 | **576** |
| Positive reviews | **80.0% of reviews** | 21.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 24 MB | 207 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [CommandFusion Pty Ltd](https://appshunter.io/developer/285304610) | [Snap One, LLC](https://appshunter.io/developer/417819127) |

## What reviewers say

### iViewer 4

[App page](https://appshunter.io/ios/app/iviewer-4/id451480063)

This app allows for two-way remote control of any TCP/IP or UDP capable hardware and software directly from your iOS device. It's ideal for home automation, enabling control of lights, temperature, AV, security, and more, with extensive customization options and scripting capabilities.

**Highlights:** Customizable interface with guiDesigner, Control multiple systems (TCP/UDP), JavaScript API for logic scripting, Two-way remote control, Parse system feedback, Supports all iOS devices

**In-app purchases:** none


### Control4 for OS 3

[App page](https://appshunter.io/ios/app/control4-for-os-3/id1320153814)

Transform your iPhone or iPad into a personal interface for your smart home. Control all connected devices, including lights, thermostats, security, and media, with a redesigned, personalized experience. Requires a Control4 Smart Home OS 3 system.

**Highlights:** Personalized user interface, Control lights, thermostats, security, Manage music and video, Access favorites and room-specific settings, Intuitive volume control, Customizable room wallpapers

**Features:** macOS Compatibility, Apple Wallet, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Responsive and fast
- 🌟 Elegant and modern UI
- 🔒 Robust security features
- 👍 Customizable and personalized
- 🎨 Improved visual design

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- ⏱️ Slow load times and reconnections
- 🔌 Unreliable connectivity
- 🤖 Lacking integration with smart home platforms
- 💰 Expensive and costly to maintain

**Reported bugs**

- Intercom and doorbell issues
- Thermostat controls not working as expected
- Inability to connect to the system remotely
- Compatibility problems with newer iOS versions
- Unexpected app crashes and freezes

**Requested features**

- Apple Watch app support
- Better integration with Apple ecosystem
- Improved voice control and Alexa integration
- More customization options for users
- Faster and more responsive app performance


## Frequently asked questions

### Is iViewer 4 free?

iViewer 4 is free to download, with no in-app purchases.

### Is Control4 for OS 3 free?

Control4 for OS 3 is free to download, with no in-app purchases.

### Which has better reviews, iViewer 4 or Control4 for OS 3?

iViewer 4 is rated higher. iViewer 4 averages 4.0 out of 5 from 6 ratings, while Control4 for OS 3 averages 3.0 from 576 ratings.

### Do iViewer 4 or Control4 for OS 3 have ads?

Neither iViewer 4 nor Control4 for OS 3 shows ads.

### Which is updated more often, iViewer 4 or Control4 for OS 3?

iViewer 4 ships an update every 4 months, and Control4 for OS 3 fortnightly. Most recently, iViewer 4 was updated on October 23, 2026 and Control4 for OS 3 on October 26, 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.*