# HygroSoft vs GR Demo

The clearest difference is update cadence: GR Demo at every 6 weeks against HygroSoft's every 8 months. 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.

HygroSoft ships an update every 8 months, GR Demo every 6 weeks. The most recent releases landed on June 1, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | HygroSoft | GR Demo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/hygrosoft/id6443735672/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 166 MB | 29 MB |
| Requires iOS | **14.2** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rotronic AG](https://appshunter.io/developer/1057939250) | [GemRed](https://appshunter.io/developer/1279222567) |

## What reviewers say

### HygroSoft

[App page](https://appshunter.io/ios/app/hygrosoft/id6443735672)

This utility app allows for easy configuration, adjustment, and updates of new Rotronic devices using your smartphone's NFC interface. It supports device setup even without a power supply.

**Highlights:** NFC interface for device interaction, Easy configuration of Rotronic devices, Adjustment and updates via smartphone, Supports devices without power supply, Compatible with HygroFlex series

**In-app purchases:** none


### GR Demo

[App page](https://appshunter.io/ios/app/gr-demo/id6448940716)

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

**In-app purchases:** none


## Frequently asked questions

### Is HygroSoft free?

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

### Is GR Demo free?

GR Demo is free to download, with no in-app purchases.

### Do HygroSoft or GR Demo have ads?

Neither HygroSoft nor GR Demo shows ads.

### Which is updated more often, HygroSoft or GR Demo?

HygroSoft ships an update every 8 months, and GR Demo every 6 weeks. Most recently, HygroSoft was updated on June 1, 2026 and GR Demo on September 13, 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.*