# Helios FDR vs ETHERMA eTOUCH

The clearest difference is update cadence: Helios FDR at every 7 months against ETHERMA eTOUCH's every 16 months. Helios FDR also leads on iOS requirement (12.0 vs 15.1). 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.

Helios FDR ships an update every 7 months, ETHERMA eTOUCH every 16 months. The most recent releases landed on October 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Helios FDR | ETHERMA eTOUCH |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 16 months |
| Monetization | Free | — |
| Size | 78 MB | 41 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Helios Ventilatoren GmbH + Co KG](https://appshunter.io/developer/1553902986) | [Etherma](https://appshunter.io/developer/1606968285) |

## What reviewers say

### Helios FDR

[App page](https://appshunter.io/ios/app/helios-fdr/id1553902744)

This application allows users to intuitively customize and monitor their Helios differential humidity control systems. Users can define humidity and temperature setpoints, configure weekly programs for sleep cycles, and log data for up to four weeks. It is designed to manage multiple FDR systems.

**Highlights:** Customize humidity and temperature setpoints, Configure weekly programs for sleep cycles, Log and export temperature/humidity data, Manage multiple FDR systems, Define minimum room temperature

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

**In-app purchases:** none


### ETHERMA eTOUCH

[App page](https://appshunter.io/ios/app/etherma-etouch/id1606968283)

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

**In-app purchases:** none


## Frequently asked questions

### Is Helios FDR free?

Helios FDR is free to download, with no in-app purchases.

### Is ETHERMA eTOUCH free?

ETHERMA eTOUCH is free to download, with no in-app purchases.

### Do Helios FDR or ETHERMA eTOUCH have ads?

Neither Helios FDR nor ETHERMA eTOUCH shows ads.

### Which is updated more often, Helios FDR or ETHERMA eTOUCH?

Helios FDR ships an update every 7 months, and ETHERMA eTOUCH every 16 months. Most recently, Helios FDR was updated on October 7, 2026 and ETHERMA eTOUCH on October 30, 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.*