# bluSensor vs HS

The clearest difference is rating: HS at 5.0 against bluSensor's 1.0. HS also leads on update cadence (every 3 weeks vs every 2 months). bluSensor's advantage is ratings volume (5 vs 1) and device support (3 vs 1). On price, review sentiment, 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 holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: bluSensor has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

bluSensor ships an update every 2 months, HS every 3 weeks. The most recent releases landed on September 9, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | bluSensor | HS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (5 ratings)](https://appshunter.io/ios/app/blusensor/id1018752395/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hs-221/id1622669307/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 31 MB | 5 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Almendo Technologies GmbH](https://appshunter.io/developer/1018752244) | [HUMITAT-STOP S.L.](https://appshunter.io/developer/1622669309) |

## What reviewers say

### bluSensor

[App page](https://appshunter.io/ios/app/blusensor/id1018752395)

Monitor temperature, humidity, and air quality with wireless sensors. Get real-time data, alerts, and historical tracking on your smartphone or tablet. Suitable for home and professional environments.

**Highlights:** Real-time environmental monitoring, Temperature and humidity tracking, Air quality alerts, Historical data logging, Smartphone and tablet compatibility, Web app access

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is bluSensor free?

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

### Is HS free?

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

### Which has better reviews, bluSensor or HS?

HS is rated higher. bluSensor averages 1.0 out of 5 from 5 ratings, while HS averages 5.0 from 1 ratings.

### Do bluSensor or HS have ads?

Neither bluSensor nor HS shows ads.

### Which is updated more often, bluSensor or HS?

bluSensor ships an update every 2 months, and HS every 3 weeks. Most recently, bluSensor was updated on September 9, 2026 and HS on September 16, 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.*