# OPTICHECK Temperature Mobile vs HygroSoft

The clearest difference is iOS requirement: OPTICHECK Temperature Mobile at 9.0 against HygroSoft's 14.2. On price, update cadence, ads and in-app purchases there is nothing between them.

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

OPTICHECK Temperature Mobile ships an update every 4 months, HygroSoft every 8 months. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | OPTICHECK Temperature Mobile | HygroSoft |
| --- | --- | --- |
| 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 4 months** | Every 8 months |
| Monetization | — | Free |
| Size | 59 MB | 166 MB |
| Requires iOS | **9.0** | 14.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KROHNE Messtechnik GmbH](https://appshunter.io/developer/1445655816) | [Rotronic AG](https://appshunter.io/developer/1057939250) |

## What reviewers say

### OPTICHECK Temperature Mobile

[App page](https://appshunter.io/ios/app/opticheck-temperature-mobile/id1485401520)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is OPTICHECK Temperature Mobile free?

OPTICHECK Temperature Mobile is free to download, with no in-app purchases.

### Is HygroSoft free?

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

### Do OPTICHECK Temperature Mobile or HygroSoft have ads?

Neither OPTICHECK Temperature Mobile nor HygroSoft shows ads.

### Which is updated more often, OPTICHECK Temperature Mobile or HygroSoft?

OPTICHECK Temperature Mobile ships an update every 4 months, and HygroSoft every 8 months. Most recently, OPTICHECK Temperature Mobile was updated on October 4, 2026 and HygroSoft on October 5, 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.*