# MerryIoT Sensor vs TR

The clearest difference is update cadence: TR at every 5 days against MerryIoT Sensor's every 5 months. TR also leads on iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

MerryIoT Sensor ships an update every 5 months, TR every 5 days. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | MerryIoT Sensor | TR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/merryiot-sensor/id1614807356/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 33 MB | 3 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [BROWAN COMMUNICATIONS INCORPORATION](https://appshunter.io/developer/1584963490) | [Globalsat Technology Corporation.](https://appshunter.io/developer/624997558) |

## 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


### TR

[App page](https://appshunter.io/ios/app/tr-520/id6449723121)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MerryIoT Sensor free?

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

### Is TR free?

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

### Do MerryIoT Sensor or TR have ads?

Neither MerryIoT Sensor nor TR shows ads.

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

MerryIoT Sensor ships an update every 5 months, and TR every 5 days. Most recently, MerryIoT Sensor was updated on October 9, 2026 and TR on October 7, 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.*