# Zehnder Connect vs ATTACK Condens

The clearest difference is update cadence: Zehnder Connect at every 4 months against ATTACK Condens's every 15 months. Zehnder Connect also leads on iOS requirement (13.0 vs 15.0). 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.

Zehnder Connect ships an update every 4 months, ATTACK Condens every 15 months. The most recent releases landed on October 14, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Zehnder Connect | ATTACK Condens |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 15 months |
| Monetization | Free | — |
| Size | 38 MB | 12 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zehnder Group AG](https://appshunter.io/developer/1104291807) | [Bertell & Partners](https://appshunter.io/developer/1530565449) |

## What reviewers say

### Zehnder Connect

[App page](https://appshunter.io/ios/app/zehnder-connect/id1198950940)

Control and manage your Zehnder radiators remotely from your smartphone or tablet. Optimize your home's thermal comfort and energy consumption with customizable schedules and settings.

**Highlights:** Remote radiator management, Customizable daily/weekly schedules, Personalize factory settings, Define custom scenarios (home, away, sleep), Activate functions like pre-heating, Monitor room temperature, Open window detection

**Features:** macOS Compatibility

**In-app purchases:** none


### ATTACK Condens

[App page](https://appshunter.io/ios/app/attack-condens/id1606763140)

**In-app purchases:** none


## Frequently asked questions

### Is Zehnder Connect free?

Zehnder Connect is free to download, with no in-app purchases.

### Is ATTACK Condens free?

ATTACK Condens is free to download, with no in-app purchases.

### Do Zehnder Connect or ATTACK Condens have ads?

Neither Zehnder Connect nor ATTACK Condens shows ads.

### Which is updated more often, Zehnder Connect or ATTACK Condens?

Zehnder Connect ships an update every 4 months, and ATTACK Condens every 15 months. Most recently, Zehnder Connect was updated on October 14, 2026 and ATTACK Condens on October 18, 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.*