Comparison

Symphony by GeoStar vs Shelly Smart Control

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

Head to head
About

Symphony by GeoStar

Control and monitor your geothermal comfort system remotely. View real-time system feedback, track energy usage, and receive alerts for maintenance. Access your entire geothermal system, not just the thermostat, from any internet-connected device.

Highlights
  • Remote system monitoring
  • Real-time feedback
  • Temperature and program 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 Geostar 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. • Receive equipment alerts and service reminders (as well as your dealer) via email and texts.

About

Shelly Smart Control

Remotely monitor and control smart home devices from anywhere, either through the cloud or your local network. Manage lights, appliances, and sensors, and create custom automation scenes. Supports Wi-Fi, Bluetooth, and LAN connectivity for seamless integration.

Highlights
  • Remote device control
  • Local network control
  • Device monitoring
  • Custom scheduling
  • Scene creation
  • Energy consumption monitoring
  • Real-time alerts
Features
Read full description

This app offers the possibility to control all Shelly devices remotely. You can monitor and control your devices from anywhere (by using the cloud option) or, if you do not want the Cloud option, you will still be able to monitor and control your devices from within your local network. Shelly devices do not need to be connected to the cloud or to send data there. The Shelly Home Automation portfolio includes a variety of relay switches, sensors, plugs, bulbs, and other controllers, all connected and controlled through your Wi-Fi network. The new Shelly Plus and Shelly Pro lines of products additionally support Bluetooth connectivity for faster device inclusion and communication, and the new Shelly Pro line offers LAN and Wi-Fi usage simultaneously. The entire Shelly portfolio is available at https://shelly.cloud/ Shelly devices are suitable to control lights, garage doors, curtains, window blinds, or other appliances, trigger actions based on certain parameters from sensor devices. Devices provide near real time notification on changes of the parameters they are measuring - energy consumption, temperature other environment values. All Shelly devices have: - Embedded Web server - Wi-Fi control and connectivity - APIs for observation and control A user account is required to access, include, and control Shelly devices through the application. Once Shelly account is registered, you can: - Connect the devices to an existing W-Fi network or use their Access Point mode locally to control other Shelly devices; - Include, manage, and operate as many Shelly devices as you need; - Configure devices and manage individual settings on every device; - Configure custom scheduling for automatic actions; - Create personalized rooms for more convenient organising and control of the devices; - Define custom Groups of devices to control multiple devices with one command within the app; - Build simple and complex scenes by combining Shelly devices to trigger certain actions in your home automation; - Monitor current and past electrical power consumption of the electrical circuit(s) and loads (for Shelly devices equipped with Power-measuring capabilities); - Build complex automation solutions for improved energy and operational efficiency; - Receive real time alerts and notifications based on your preference. Shelly devices are compatible with other widely used both local and cloud-based home automation platforms like Google Home or Alexa.

Screenshots

Symphony by GeoStar3 screens
Shelly Smart Control4 screens

Verdict

The call

The clearest difference is review sentiment: Shelly Smart Control at 47% against Symphony by GeoStar's 0%. Shelly Smart Control also leads on rating (3.1 vs 2.0) and update cadence (every 2 weeks vs every 4 months). 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

Shelly Smart Control holds the better App Store score, 3.1 against 2.0. That said, the two scores are not equally well evidenced: Shelly Smart Control has 89 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 0% of Symphony by GeoStar's written reviews are positive against 47% of Shelly Smart Control's.

UpkeepUpdate frequency

Symphony by GeoStar ships an update every 4 months, Shelly Smart Control every 2 weeks. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 6 level
Symphony by GeoStar versus Shelly Smart Control: the parameters behind the verdict, then further details
ParameterSymphony by GeoStarShelly Smart Control
PriceFreeFree
Rating2.0 (4 ratings)3.1 (89 ratings) — better
Positive reviews0.0% of reviews47.3% of reviews — better
Number of ratings489 — better
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS15.015.0
Further details — not scored
Size17 MB258 MB
Age rating4+4+
DeveloperWaterFurnace InternationalSHELLY EUROPE EOOD

Customer experience

Symphony by GeoStar

All ratings4 ratings
Positive25.0%
Neutral0.0%
Negative75.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Shelly Smart Control

All ratings89 ratings
Positive50.6%
Neutral9.0%
Negative40.4%
Written reviews146 reviews
Positive47.3%
Neutral13.0%
Negative39.7%

In-app purchases

None

Symphony by GeoStar

No in-app purchases

None

Shelly Smart Control

No in-app purchases

Questions

Is Symphony by GeoStar free?
Symphony by GeoStar is free to download, with no in-app purchases.
Is Shelly Smart Control free?
Shelly Smart Control is free to download, with no in-app purchases.
Which has better reviews, Symphony by GeoStar or Shelly Smart Control?
Shelly Smart Control is rated higher. Symphony by GeoStar averages 2.0 out of 5 from 4 ratings, while Shelly Smart Control averages 3.1 from 89 ratings.
Do Symphony by GeoStar or Shelly Smart Control have ads?
Neither Symphony by GeoStar nor Shelly Smart Control shows ads.
Which is updated more often, Symphony by GeoStar or Shelly Smart Control?
Symphony by GeoStar ships an update every 4 months, and Shelly Smart Control every 2 weeks. Most recently, Symphony by GeoStar was updated on October 24, 2026 and Shelly Smart Control on October 29, 2026.

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