Comparison

AC20 vs Schlüter®

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

Head to head
About

AC20

Features
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App Functions: • Quick and Easy Setup by QR Code • OTA Update • Multiple Devices • Multiple Users • Switch On/Off Device • Set Temperature • Switch Fan Speed • Switch Mode • Set Special Functions: Away, Sleep, Comfort, Eco • Set Scheduling • Enable Key Lock function • Set RTC Sync

About

Schlüter®

Features
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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

AC204 screens
Schlüter®4 screens

Verdict

The call

The clearest difference is update cadence: Schlüter® at every 2 weeks against AC20's every 21 months. AC20's advantage is iOS requirement (12.0 vs 16.0). 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

AC20 ships an update every 21 months, Schlüter® every 2 weeks. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 4 level
AC20 versus Schlüter®: the parameters behind the verdict, then further details
ParameterAC20Schlüter®
PriceFreeFree
Update frequencyEvery 21 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size45 MB106 MB
Age rating4+17+
DeveloperDaikin Electronic Devices Malaysia Sdn BhdSchlueter-Systems KG

In-app purchases

None

AC20

No in-app purchases

None

Schlüter®

No in-app purchases

Questions

Is AC20 free?
AC20 is free to download, with no in-app purchases.
Is Schlüter® free?
Schlüter® is free to download, with no in-app purchases.
Do AC20 or Schlüter® have ads?
Neither AC20 nor Schlüter® shows ads.
Which is updated more often, AC20 or Schlüter®?
AC20 ships an update every 21 months, and Schlüter® every 2 weeks. Most recently, AC20 was updated on November 7, 2026 and Schlüter® on November 5, 2026.

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