# TTi SmartControl TECHNOTHERM vs ETHERMA FIRE+ICE2

The clearest difference is update cadence: TTi SmartControl TECHNOTHERM at every 3 months against ETHERMA FIRE+ICE2's every 6 months. TTi SmartControl TECHNOTHERM also leads on iOS requirement (12.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

TTi SmartControl TECHNOTHERM ships an update every 3 months, ETHERMA FIRE+ICE2 every 6 months. The most recent releases landed on October 5, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | TTi SmartControl TECHNOTHERM | ETHERMA FIRE+ICE2 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Free | — |
| Size | 65 MB | 28 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lucht LHZ Elektroheizung GmbH & Co. KG](https://appshunter.io/developer/1194100934) | [Solution Tech Srl](https://appshunter.io/developer/1485604429) |

## What reviewers say

### TTi SmartControl TECHNOTHERM

[App page](https://appshunter.io/ios/app/tti-smartcontrol-technotherm/id1449468152)

This app allows you to remotely control Technotherm heaters using a DSM thermostat. Features include open window detection, geolocation-based temperature adjustments when leaving, and voice control via Alexa. You can also manage guest access and control all compatible heaters from one place.

**Highlights:** Open window detection, Geolocation temperature control, Alexa voice integration, Guest invitation management, Control all Technotherm heaters

**Features:** macOS Compatibility

**In-app purchases:** none


### ETHERMA FIRE+ICE2

[App page](https://appshunter.io/ios/app/etherma-fire-plus-ice2/id6740922706)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TTi SmartControl TECHNOTHERM free?

TTi SmartControl TECHNOTHERM is free to download, with no in-app purchases.

### Is ETHERMA FIRE+ICE2 free?

ETHERMA FIRE+ICE2 is free to download, with no in-app purchases.

### Do TTi SmartControl TECHNOTHERM or ETHERMA FIRE+ICE2 have ads?

Neither TTi SmartControl TECHNOTHERM nor ETHERMA FIRE+ICE2 shows ads.

### Which is updated more often, TTi SmartControl TECHNOTHERM or ETHERMA FIRE+ICE2?

TTi SmartControl TECHNOTHERM ships an update every 3 months, and ETHERMA FIRE+ICE2 every 6 months. Most recently, TTi SmartControl TECHNOTHERM was updated on October 5, 2026 and ETHERMA FIRE+ICE2 on September 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*