Comparison

iViewer 4 vs Control4 for OS 3

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

Head to head
About

iViewer 4

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
Read full description

======= HOME AUTOMATION APP ======= - Customize entire interface with guiDesigner (free) - Control as many systems as required (TCP/UDP) - Logic scripting via powerful JavaScript API - Made for integration professionals - Supports all iOS devices (iPads, iPhones, iPods) - Works with any control system, including our own CommandFusion iViewer allows two way remote control of any hardware or software capable of TCP/IP or UDP communications, directly from your iPad, iPhone or iPod Touch. One of the many functions iViewer can be used for is home automation. Control your lights, temperature, AV, security, and much more! iViewer works seamlessly with our own hardware, as well as other systems such as Crestron, AMX, Control4, GlobalCache, basically any hardware can be controlled with iViewer so long as it can be controlled via Ethernet. Just create custom commands and macros to send to the devices via TCP or UDP and the rest is up to your imagination! Use our guiDesigner software to customize the interface to suit your needs. Full control over how each page looks and interacts. Assign custom commands to GUI objects to control any device on your network, both locally and remotely. Supports Gestures, Timers, Token assignment, dynamic commands, everything you need for full control over any Ethernet device. Parse feedback from any system with our powerful regular expression engine. Show temperatures, volume levels, light levels, etc, from any Ethernet system, right on your iPhone, no control system required! For the professionals, the entire interface and communication engine is scriptable via JavaScript using our API (http://www.commandfusion.com/docs/scripting) Visit www.commandfusion.com for more information.

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.

Screenshots

iViewer 42 screens
Control4 for OS 34 screens

Verdict

The call

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.

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

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
iViewer 4 versus Control4 for OS 3: the parameters behind the verdict, then further details
ParameteriViewer 4Control4 for OS 3
PriceFreeFree
Rating4.0 (6 ratings) — better3.0 (576 ratings)
Positive reviews80.0% of reviews — better21.8% of reviews
Number of ratings6576 — better
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS8.0 — better18.0
Further details — not scored
Size24 MB207 MB
Age rating4+4+
DeveloperCommandFusion Pty LtdSnap One, LLC

Customer experience

iViewer 4

All ratings6 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

Control4 for OS 3

All ratings573 ratings
Positive46.4%
Neutral7.7%
Negative45.9%
Written reviews275 reviews
Positive21.8%
Neutral7.6%
Negative70.5%

Bugs and requests

iViewer 4

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

iViewer 4

No in-app purchases

None

Control4 for OS 3

No in-app purchases

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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