# Helios FDR vs WellnessTech Controller

The clearest difference is update cadence: WellnessTech Controller at every 6 weeks against Helios FDR's every 7 months. Helios FDR's advantage is iOS requirement (12.0 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.

Helios FDR ships an update every 7 months, WellnessTech Controller every 6 weeks. The most recent releases landed on June 5, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Helios FDR | WellnessTech Controller |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 78 MB | 55 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Helios Ventilatoren GmbH + Co KG](https://appshunter.io/developer/1553902986) | [WellnessTech Kft.](https://appshunter.io/developer/1739741593) |

## 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


### WellnessTech Controller

[App page](https://appshunter.io/ios/app/wellnesstech-controller/id6745705968)

**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 WellnessTech Controller free?

WellnessTech Controller is free to download, with no in-app purchases.

### Do Helios FDR or WellnessTech Controller have ads?

Neither Helios FDR nor WellnessTech Controller shows ads.

### Which is updated more often, Helios FDR or WellnessTech Controller?

Helios FDR ships an update every 7 months, and WellnessTech Controller every 6 weeks. Most recently, Helios FDR was updated on June 5, 2026 and WellnessTech Controller on September 11, 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.*