# SD Tool vs Zip Key

The clearest difference is update cadence: SD Tool at every 6 weeks against Zip Key's every 9 months. 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.

SD Tool ships an update every 6 weeks, Zip Key every 9 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SD Tool | Zip Key |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 9 months |
| Monetization | Free | — |
| Size | 3 MB | 30 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ubigreen](https://appshunter.io/developer/1315420061) | [StreamNow](https://appshunter.io/developer/1038247999) |

## 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


### Zip Key

[App page](https://appshunter.io/ios/app/zip-key/id1605551482)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SD Tool free?

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

### Is Zip Key free?

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

### Do SD Tool or Zip Key have ads?

Neither SD Tool nor Zip Key shows ads.

### Which is updated more often, SD Tool or Zip Key?

SD Tool ships an update every 6 weeks, and Zip Key every 9 months. Most recently, SD Tool was updated on October 24, 2026 and Zip Key on October 25, 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.*