# MerryIoT Sensor vs Roomsys

The clearest difference is rating: Roomsys at 5.0 against MerryIoT Sensor's 1.0. Roomsys also leads on update cadence (every 3 weeks vs every 5 months). On price, ratings volume, 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.

Roomsys holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

MerryIoT Sensor ships an update every 5 months, Roomsys every 3 weeks. The most recent releases landed on June 1, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | MerryIoT Sensor | Roomsys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/merryiot-sensor/id1614807356/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/roomsys/id6502721762/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 33 MB | 24 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BROWAN COMMUNICATIONS INCORPORATION](https://appshunter.io/developer/1584963490) | [Roomsys LLC](https://appshunter.io/developer/1746610639) |

## What reviewers say

### MerryIoT Sensor

[App page](https://appshunter.io/ios/app/merryiot-sensor/id1614807356)

Monitor your home's environment with this app. It tracks air quality, detects water leaks, and alerts you to unexpected movement, helping ensure a healthy and safe living space.

**Highlights:** Air quality monitoring, Water leak detection, Movement detection, Home safety alerts, Healthy home environment

**Features:** macOS Compatibility

**In-app purchases:** none


### Roomsys

[App page](https://appshunter.io/ios/app/roomsys/id6502721762)

Monitor your building for potential hazards like water leaks, mold, and gas leaks. This system helps prevent costly damage and ensures a safer environment.

**Highlights:** Water leak detection, Mold prevention, Gas leak monitoring, Costly damage prevention, Smart building system

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

**In-app purchases:** none


## Frequently asked questions

### Is MerryIoT Sensor free?

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

### Is Roomsys free?

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

### Which has better reviews, MerryIoT Sensor or Roomsys?

Roomsys is rated higher. MerryIoT Sensor averages 1.0 out of 5 from 2 ratings, while Roomsys averages 5.0 from 1 ratings.

### Do MerryIoT Sensor or Roomsys have ads?

Neither MerryIoT Sensor nor Roomsys shows ads.

### Which is updated more often, MerryIoT Sensor or Roomsys?

MerryIoT Sensor ships an update every 5 months, and Roomsys every 3 weeks. Most recently, MerryIoT Sensor was updated on June 1, 2026 and Roomsys on September 10, 2026.

---

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