# Control4 for OS 3 vs Flex

The clearest difference is ratings volume: Control4 for OS 3 at 570 against Flex's 4. Control4 for OS 3 also leads on update cadence (fortnightly vs every 6 weeks). Flex's advantage is iOS requirement (9.3 vs 18.0). On price, rating, 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.

On the App Store both sit at effectively the same score — 3.1 for Control4 for OS 3 against 3.0 for Flex. That said, the two scores are not equally well evidenced: Control4 for OS 3 has 570 ratings behind it against 4, so its average is the more settled of the two.

Control4 for OS 3 ships an update fortnightly, Flex every 6 weeks. The most recent releases landed on September 23, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Control4 for OS 3 | Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (570 ratings)](https://appshunter.io/ios/app/control4-for-os-3/id1320153814/reviews)** | [3.0 (4 ratings)](https://appshunter.io/ios/app/flex-link-s2/id1437594609/reviews) |
| Number of ratings | **570** | 4 |
| Positive reviews | 22.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 207 MB | 21 MB |
| Requires iOS | 18.0 | **9.3** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Snap One, LLC](https://appshunter.io/developer/417819127) | [LinkCom Manufacturing Co., Ltd.](https://appshunter.io/developer/1287465139) |

## What reviewers say

### 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


### Flex

[App page](https://appshunter.io/ios/app/flex-link-s2/id1437594609)

This application allows you to customize the colors and hues of your lighting system. Enhance any environment with a spectrum of bold colors, warm tones, and custom shades, bringing your creative vision to life.

**Highlights:** Control lighting colors, Customize hues and tones, Enhance lighting environments, Creative color application

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Control4 for OS 3 free?

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

### Is Flex free?

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

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

Control4 for OS 3 is rated higher. Control4 for OS 3 averages 3.1 out of 5 from 570 ratings, while Flex averages 3.0 from 4 ratings.

### Do Control4 for OS 3 or Flex have ads?

Neither Control4 for OS 3 nor Flex shows ads.

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

Control4 for OS 3 ships an update fortnightly, and Flex every 6 weeks. Most recently, Control4 for OS 3 was updated on September 23, 2026 and Flex on June 1, 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.*