# RTM Smart ID vs HygroSoft

RTM Smart ID and HygroSoft are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

RTM Smart ID ships an update every 10 months, HygroSoft every 8 months. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | RTM Smart ID | 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 10 months | **Every 8 months** |
| Monetization | — | Free |
| Size | 12 MB | 166 MB |
| Requires iOS | **13.0** | 14.2 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RTM Systems AG](https://appshunter.io/developer/1144056287) | [Rotronic AG](https://appshunter.io/developer/1057939250) |

## What reviewers say

### RTM Smart ID

[App page](https://appshunter.io/ios/app/rtm-smart-id/id1524475566)

**Features:** Apple Wallet, Apple Watch app, Vision Pro support

**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 RTM Smart ID free?

RTM Smart ID is free to download, with no in-app purchases.

### Is HygroSoft free?

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

### Do RTM Smart ID or HygroSoft have ads?

Neither RTM Smart ID nor HygroSoft shows ads.

### Which is updated more often, RTM Smart ID or HygroSoft?

RTM Smart ID ships an update every 10 months, and HygroSoft every 8 months. Most recently, RTM Smart ID was updated on October 2, 2026 and HygroSoft on October 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*