# SD Tool vs MTRay

The clearest difference is in-app purchases: SD Tool at none against MTRay's 1. SD Tool also leads on iOS requirement (13.0 vs 17.0). MTRay's advantage is update cadence (every 8 days vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. MTRay sells 1 one-off in-app purchase. SD Tool asks for nothing beyond the download.

SD Tool ships an update every 6 weeks, MTRay every 8 days. The most recent releases landed on October 4, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | SD Tool | MTRay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/sd-tool/id1315420062/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 8 days** |
| Monetization | Free | — |
| Size | 3 MB | 62 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Ubigreen](https://appshunter.io/developer/1315420061) | [Chill Information Technology Limited](https://appshunter.io/developer/1536753936) |

## What reviewers say

### SD Tool

[App page](https://appshunter.io/ios/app/sd-tool/id1315420062)

This utility app facilitates the management of Ubigreen SmartDesk sensors. Users can install, replace, disable, or move sensors by associating them with locations, scanning QR codes, or inputting serial numbers. It offers automatic data syncing to the cloud and local duplication detection.

**Highlights:** Install, replace, disable, and move sensors, Associate sensors with locations, Scan QR codes or input serial numbers, Automatic data sync to Ubigreen cloud, Export installed sensor list to CSV, Local duplication detection, View sensor status and autonomy

**Features:** macOS Compatibility

**In-app purchases:** none


### MTRay

[App page](https://appshunter.io/ios/app/mtray/id6761518102)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MTRay Pro | $7.99 | one-time |


## Frequently asked questions

### Is SD Tool free?

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

### Is MTRay free?

MTRay is free to download, with in-app purchases available.

### Do SD Tool or MTRay have ads?

Neither SD Tool nor MTRay shows ads.

### Which is updated more often, SD Tool or MTRay?

SD Tool ships an update every 6 weeks, and MTRay every 8 days. Most recently, SD Tool was updated on October 4, 2026 and MTRay on October 15, 2026.

---

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