LightSymphony vs Schlüter®
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LightSymphony
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Control your garden lighting from your iPhone! Control your LightSymphony garden lighting: * Scrolling display provides individual control of each garden area * On, Off, Dimming level (intensity) and colour for each area. * Name your garden areas with meaningful names * Show control - Start, stop, speed and colours * Simple to set up and use Requirements: * App works on any iPhone with iOS 17 or later. * App requires an internet connection to function. * Colour control requires a compatible LightSymphony colour controller.
Schlüter®
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Experience full control of your Schlüter®-Control-TR Thermostats with our app. Easily manage and customize your thermostat settings to achieve the perfect comfort level while staying informed with all the data you need. The app offers all information and guidance you need for a proper setup. • View and set indoor temperatures With the Schlüter®-TR-Control app, you can easily view and adjust the temperatures in all rooms and locations with installed thermostats. • View and change your heating schedule Your Schlüter®-Control-TR Thermostats has a default schedule function that automatically adjusts heating levels to match your timetable. However, if you need more flexibility, the schedule mode in the app allows you to create your own schedules from blank or edit its predefined graphics. • Thermostat Zoning You can control the temperature of different rooms, or zones, in your house by installing multiple thermostats or using a central one. From our app, you can set different temperatures for each zone and control them individually or in groups. For example, you might set a higher setpoint for a bathroom used frequently and a lower setpoint for a bedroom occupied only at night. You can also toggle schedules on or off and put the system in standby mode if necessary. • Set your heating system to vacation mode When you go on vacation or business, you can use the Schlüter®-TR-Control app to plan and schedule adjustments to your heating program. This way, you can save money by not heating an empty home and still have a warm welcome when you return. • Enable voice control/Smart Home Integration If you have a smart home system or voice assistant set up, this app will guide you to connect it to your thermostat and enable voice control. Connecting your thermostat to a voice assistant such as Alexa or Google Assistant offers more convenience and another option to control your system beyond the app. Connecting your app to the thermostat is simple: • Bluetooth® – Local access via Bluetooth® makes it simple to connect to your thermostat • WiFi & Cloud connection – Remotely access your thermostat information in our app in the cloud anytime, anywhere with an internet connection Good for installers to know: • Bluetooth® connection – Local access via Bluetooth® eliminates the need for homeowners' WiFi credentials
Screenshots
Verdict
The clearest difference is update cadence: Schlüter® at every 2 weeks against LightSymphony's every 6 weeks. On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
LightSymphony ships an update every 6 weeks, Schlüter® every 2 weeks. The most recent releases landed on October 4, 2026 and October 17, 2026 respectively.
| Parameter | LightSymphony | Schlüter® |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.5 | 16.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 106 MB |
| Age rating | 4+ | 17+ |
| Developer | Paul Metcalfe International Ltd | Schlueter-Systems KG |
In-app purchases
LightSymphony
No in-app purchases
Schlüter®
No in-app purchases









