Comparison

Symphony by WaterFurnace vs Control4

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

Head to head
About

Symphony by WaterFurnace

Control your geothermal heating and cooling system remotely with this WiFi-enabled platform. Monitor system performance, adjust temperatures across multiple zones, and track energy usage from any device. Receive alerts and service reminders for proactive maintenance.

Highlights
  • Remote system control
  • Real-time system feedback
  • Multi-zone temperature control
  • Energy usage tracking
  • Equipment alerts and reminders
  • Cloud-based access
Features
Read full description

Symphony is a WiFi enabled comfort platform that’s unsurpassed in its ease of use, features and capabilities. It provides detailed system feedback in real-time and the tools to control it. Symphony marries the Aurora controls of your WaterFurnace geothermal unit with the Aurora Weblink router, providing access to your equipment from practically anywhere. Symphony is cloud-based so there’s no software to install and provides control over your entire geothermal system - not just the thermostat as in other ‘smart thermostat’ systems. Symphony allows you to: • View and control your geothermal system’s operation from anywhere using a laptop, smart phone or tablet using an intuitive dashboard for quick access to your unit’s status, operation history, alert history, and energy usage. • Remotely control temperatures and programs for up to 6 zones (requires the IntelliZone2 zoning system). • Observe and track your unit’s energy use for the last 13 months. • Provide equipment performance data to dealers for remote monitoring and diagnosis (Premium package required). • Receive equipment alerts and service reminders (as well as your dealer) via email and texts (Premium package required).

About

Control4

Manage your smart home devices like lighting, music, and security from a single, intuitive interface. Customize your home screen and create automated routines for seamless control. Integrates with Apple HomeKit for Siri voice commands.

Highlights
  • All-in-one home screen control
  • Customizable favorites and widgets
  • Automated routines and scenes
  • Multiroom entertainment management
  • Live camera views and security alerts
  • Apple HomeKit and Siri integration
Features
Read full description

Easily manage your smart home with a sleek, intuitive interface. Control lighting, shades, music, security, and more—all from one place. Customize your home screen and create personalized routines for quick, seamless access. Now with enhanced features, including Siri voice control through Apple HomeKit. Contact a Control4 integrator to experience Control4 X4 today. NOTE: Prior to using this app, your Control4 system must be updated to Control4 X4 or later. If you are unsure of the software version of our system, check with your Control4 Integrator or log into your Control4 account at control4.com. A Smarter, More Personalized Experience • All-in-One Home Screen – Your central hub for controlling your favorite devices. Manage lighting, motorized shades, music, video, thermostats, security, cameras, door locks, garage doors, and more. See real-time status updates, access favorite devices, and control everything with ease. • Customizable Favorites – Pin the devices and controls you use most for instant access. • Quick Actions & Widgets – Resize, reorder, and organize widgets for seamless control over lighting, security cameras, and more. Personalized to You • Routines & Scenes – Save time by automating your day with pre-set routines for the morning, evening, or any moment in between. • Timers & Schedules – Set outdoor lights to turn on at sunset, TVs to turn off at bedtime, or security to arm at a set time. • Multiroom Entertainment – Control music and video in every room from one app. Play your favorite streaming services or set TVs to turn on when you walk in. Easy Control, Inside and Out • Live Camera Views – Monitor security cameras in real time and receive instant alerts. • Apple HomeKit Integration – Control your space with Siri, Apple Widgets, and CarPlay.* apple store only • Smart Notifications – Stay informed with alerts for doorbell rings, motion sensors, or security events. With the Control4 App, your space works the way you want it to — simplifying your life with effortless control. Download today and experience personalized automation like never before! *HomeKit, Siri, CarPlay are trademarks of Apple Inc., registered in the U.S. and other countries and regions.

Screenshots

Symphony by WaterFurnace4 screens
Control44 screens

Verdict

The call

The clearest difference is rating: Control4 at 3.5 against Symphony by WaterFurnace's 2.2. Control4 also leads on update cadence (fortnightly vs every 3 months) and review sentiment (38% vs 16%). Symphony by WaterFurnace's advantage is iOS requirement (15.0 vs 18.0). On price, ratings volume, 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

Control4 holds the better App Store score, 3.5 against 2.2. Both are backed by a comparable volume of ratings — 64 and 74 respectively. Written reviews point the same way: 16% of Symphony by WaterFurnace's written reviews are positive against 38% of Control4's.

UpkeepUpdate frequency

Symphony by WaterFurnace ships an update every 3 months, Control4 fortnightly. Both last shipped on October 24, 2026.

Scorecard4 real differences · 6 level
Symphony by WaterFurnace versus Control4: the parameters behind the verdict, then further details
ParameterSymphony by WaterFurnaceControl4
PriceFreeFree
Rating2.2 (64 ratings)3.5 (74 ratings) — better
Positive reviews16.3% of reviews38.2% of reviews — better
Number of ratings6474 — better
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.0 — better18.0
Further details — not scored
Size18 MB253 MB
Age rating4+4+
DeveloperWaterFurnace InternationalSnap One, LLC

Customer experience

Symphony by WaterFurnace

All ratings59 ratings
Positive18.6%
Neutral13.6%
Negative67.8%
Written reviews49 reviews
Positive16.3%
Neutral14.3%
Negative69.4%

Control4

All ratings72 ratings
Positive58.3%
Neutral6.9%
Negative34.7%
Written reviews34 reviews
Positive38.2%
Neutral5.9%
Negative55.9%

Bugs and requests

Symphony by WaterFurnace

Reported bugs

25 issues
  • Cannot log in
  • App crashes when attempting to set a schedule
  • Struggles to connect reliably
  • App crashes on new iOS versions (e.g., iOS 18)
  • App will not load after iOS upgrade
Show 20 more
  • Temperature setting reverts after changing
  • Setting does not stay set and will switch while viewing
  • App does not indicate which zones are open or calling for heat/cool
  • Bottom half of the app is off-screen and inaccessible
  • Constantly asking to log in
  • Energy graph shows data error
  • Historical data missing (0 days history)
  • Graphs not showing up
  • Temperature adjustment errors (lowering when trying to increase, or vice versa)
  • App doesn't seem to connect (blank screen)
  • AWL not connected to server messages
  • App should support VPN connection
  • Changes not always saved to thermostat
  • Half of the screens don't fit on older iPhones
  • App needs to keep app open for changes to take effect
  • Changing thermostat mode (heating/auto/cooling) requires temperature change simultaneously
  • Vacation mode issues with time zones
  • Graph opens landscape only and is barely usable
  • Deleted schedule still programmed
  • Fan-only mode shows 0W energy use

Requested features

16 requests
  • Dark mode option
  • More detailed metrics (loop temps, intake/supply temps)
  • Ability to change humidity set point
  • Remember user selections (username, password, cost per kWh)
  • Consolidate data across multiple devices
Show 11 more
  • Apple Watch integration
  • Widget for iOS
  • Direct utility energy cost integration
  • HomeKit support
  • Ability to delete non-existent thermostats
  • Larger icons for temperature change
  • Display current mode or schedule segment
  • Permanent hold override
  • API for third-party UI development
  • Add 'Cancel Vacation' option
  • Daily and monthly energy usage data

Control4

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Symphony by WaterFurnace

No in-app purchases

None

Control4

No in-app purchases

Questions

Is Symphony by WaterFurnace free?
Symphony by WaterFurnace is free to download, with no in-app purchases.
Is Control4 free?
Control4 is free to download, with no in-app purchases.
Which has better reviews, Symphony by WaterFurnace or Control4?
Control4 is rated higher. Symphony by WaterFurnace averages 2.2 out of 5 from 64 ratings, while Control4 averages 3.5 from 74 ratings.
Do Symphony by WaterFurnace or Control4 have ads?
Neither Symphony by WaterFurnace nor Control4 shows ads.
Which is updated more often, Symphony by WaterFurnace or Control4?
Symphony by WaterFurnace ships an update every 3 months, and Control4 fortnightly. Most recently, Symphony by WaterFurnace was updated on October 24, 2026 and Control4 on October 24, 2026.

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