Comparison

Control4 for OS 3 vs Flex

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Control4 for OS 3

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
Read full description

This Control4 app is specifically designed to be used with Control4 Smart Homes running OS 3. It turns your iPhone or iPad into your personal user interface to control all your smart home devices. ------------ NOTE: Prior to using this app, your Control4 system must be updated to Control4 Smart Home OS 3 or later. If you are unsure of the software version on your system, check with your Control4 Dealer or login to your Control4 account at control4.com. ------------ Smart Home OS 3 was thoughtfully redesigned to make it more personal and the smart home OS of choice for families. It enables you to check on the status and control your entire smart home including music, video, lights, thermostats, security system, cameras, door locks, garage doors, pools, and much more. New features in OS 3 • Favorites give you fast access to the devices and sources that you use most • Quickly personalize the interface right from the app • Each room can have its own favorites for fast access to the things you use most • Hide icons that are less important, but easily access them through the room menu • Swipe between favorite rooms to quickly navigate around the home • Filtering lets you see all lights, locks and shades, or just those that are on, unlocked or open • All-new Active Media Bar shows what’s currently playing and gives you fast control of media • Easily adjust volume through a new, intuitive volume slider control • Background wallpapers for each room can now be easily changed right from the app Visit Control4.com to learn more, find a showroom near you, or find a independent professional integrator.

About

Flex

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
Read full description

Control the colors of your lighting from the palm of your hand. SPJ Lighting unlocks your creative imagination to enhance any lighting environment. From bold colors to warm tones and hues our app will bring color to the night.

Screenshots

Control4 for OS 34 screens
Flex4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Control4 for OS 3 versus Flex: the parameters behind the verdict, then further details
ParameterControl4 for OS 3Flex
PriceFreeFree
Rating3.1 (570 ratings) — better3.0 (4 ratings)
Positive reviews22.0% of reviews—
Number of ratings570 — better4
Update frequencyFortnightly — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS18.09.3 — better
Further details — not scored
Size207 MB21 MB
Age rating4+4+
DeveloperSnap One, LLCLinkCom Manufacturing Co., Ltd.

Customer experience

Control4 for OS 3

All ratings570 ratings
Positive46.5%
Neutral7.7%
Negative45.8%
Written reviews273 reviews
Positive22.0%
Neutral7.7%
Negative70.3%

Flex

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

Control4 for OS 3

Reported bugs

5 issues
  • 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

5 requests
  • 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

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Control4 for OS 3

No in-app purchases

None

Flex

No in-app purchases

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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