MerryIoT Sensor vs TR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MerryIoT Sensor
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.
- Air quality monitoring
- Water leak detection
- Movement detection
- Home safety alerts
- Healthy home environment
Read full descriptionHide full description
MerryIoT is the simple way to a healthy and safe home. Download the MerryIoT app and monitor air quality status, water leak detection, unexpected movement, etc…
TR
Read full descriptionHide full description
This is a Bluetooth low energy (BLE) application for GlobalSat TR-520 configuration. By synchronizing with your TR-520, you can check the FW/APP versions and current settings. Also, you can adjust device settings to fulfill different user scenarios. With this application and TR-520, we believe you will have a better experience. Functions: Basic Information FW version / APP version Cellular settings Device settings Security setting Firmware upgrade Support iOS 11 or above.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 September 23, 2026 and October 7, 2026 respectively.
| Parameter | MerryIoT Sensor | TR |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 33 MB | 3 MB |
| Age rating | 4+ | 17+ |
| Developer | BROWAN COMMUNICATIONS INCORPORATION | Globalsat Technology Corporation. |
In-app purchases
MerryIoT Sensor
No in-app purchases
TR
No in-app purchases
