# HS vs Elma Moisture

The clearest difference is device support: Elma Moisture at 3 against HS's 1. Elma Moisture also leads on iOS requirement (11.0 vs 17.6). 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.

HS ships an update every 3 weeks, Elma Moisture every 6 weeks. The most recent releases landed on October 20, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | HS | Elma Moisture |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hs-221/id1622669307/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 5 MB | 16 MB |
| Requires iOS | 17.6 | **11.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [HUMITAT-STOP S.L.](https://appshunter.io/developer/1622669309) | [Elma Instruments A/S](https://appshunter.io/developer/1271661766) |

## What reviewers say

### HS

[App page](https://appshunter.io/ios/app/hs-221/id1622669307)

This app measures and records rising damp in walls by calculating electrical resistance between two points. Readings are transmitted via Bluetooth and stored on your iPhone for easy access and analysis.

**Highlights:** Measures wall humidity, Calculates electrical resistivity, Bluetooth data transmission, Stores readings on iPhone, Rising damp registration system

**Features:** macOS Compatibility

**In-app purchases:** none


### Elma Moisture

[App page](https://appshunter.io/ios/app/elma-moisture/id6755131289)

**In-app purchases:** none


## Frequently asked questions

### Is HS free?

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

### Is Elma Moisture free?

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

### Do HS or Elma Moisture have ads?

Neither HS nor Elma Moisture shows ads.

### Which is updated more often, HS or Elma Moisture?

HS ships an update every 3 weeks, and Elma Moisture every 6 weeks. Most recently, HS was updated on October 20, 2026 and Elma Moisture on October 28, 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.*