Comparison

IoT EMS vs Composer Mobile

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

Head to head
About

IoT EMS

Features
Read full description

Based on the Internet of things, big data, cloud computing and other modern information technologies, arcrui cloud platform connects the distributed automatic fire alarm equipment, electrical fire monitoring equipment, intelligent smoke detector, safe electricity and water and other equipment to form a network, and intelligently perceives, identifies and locates the status of these equipment, dynamically collects fire information in real time, and communicates with the public Through the cloud platform for data analysis, mining and trend analysis, it helps to achieve the goals of scientific early warning of fire, grid management, and implementation of multiple responsibility supervision. It fills the gap that the original "nine small places" and hazardous chemical production enterprises can not effectively monitor, adapts to all public and civil buildings, realizes the unattended safe electricity use, and realizes the actual needs of "automation", "intelligence", "systematization" of safe electricity use and "refinement" of electricity use management.

About

Composer Mobile

Easily set up WiFi connectivity for your TouchCombo thermostat. Once connected, remotely control your device and manage its settings from your smartphone.

Highlights
  • WiFi setup for TouchCombo thermostats
  • Remote device control
  • Thermostat settings management
  • Smartphone integration
Features
Read full description

Telkonet's Composer Mobile app is the tool you need to set up WiFi connectivity on your new TouchCombo thermostat, and then use it to remotely control your device.

Screenshots

IoT EMS4 screens
Composer Mobile4 screens

Verdict

The call

The clearest difference is update cadence: Composer Mobile at every 4 weeks against IoT EMS's every 2 months. Composer Mobile also leads on iOS requirement (11.0 vs 13). 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

IoT EMS ships an update every 2 months, Composer Mobile every 4 weeks. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 8 level
IoT EMS versus Composer Mobile: the parameters behind the verdict, then further details
ParameterIoT EMSComposer Mobile
PriceFreeFree
Rating—1.6 (13 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—13 — better
Update frequencyEvery 2 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS1311.0 — better
Further details — not scored
Size25 MB45 MB
Age rating4+4+
DeveloperACREL CO.,LTDTelkonet, Inc

In-app purchases

None

IoT EMS

No in-app purchases

None

Composer Mobile

No in-app purchases

Questions

Is IoT EMS free?
IoT EMS is free to download, with no in-app purchases.
Is Composer Mobile free?
Composer Mobile is free to download, with no in-app purchases.
Do IoT EMS or Composer Mobile have ads?
Neither IoT EMS nor Composer Mobile shows ads.
Which is updated more often, IoT EMS or Composer Mobile?
IoT EMS ships an update every 2 months, and Composer Mobile every 4 weeks. Most recently, IoT EMS was updated on October 5, 2026 and Composer Mobile on October 12, 2026.

Other comparisons